The following section of this Form 10-K generally discusses 2022 and 2021
results and year-to-year comparisons between 2022 and 2021. Discussion of 2020
results and year-to-year comparisons between 2021 and 2020 that are not included
in this Form 10-K can be found in "Management's Discussion and Analysis of
Financial Condition and Results of Operations" in Part II, Item 7 of the
Company's Annual Report on Form 10-K for the fiscal year ended December 31, 2021
filed on February 25, 2022.

Description of Merck's Business

Merck & Co., Inc. (Merck or the Company) is a global health care company that
delivers innovative health solutions through its prescription medicines,
including biologic therapies, vaccines and animal health products. The Company's
operations are principally managed on a product basis and include two operating
segments, Pharmaceutical and Animal Health, both of which are reportable
segments.

The Pharmaceutical segment includes human health pharmaceutical and vaccine
products. Human health pharmaceutical products consist of therapeutic and
preventive agents, generally sold by prescription, for the treatment of human
disorders. The Company sells these human health pharmaceutical products
primarily to drug wholesalers and retailers, hospitals, government agencies and
managed health care providers such as health maintenance organizations, pharmacy
benefit managers and other institutions. Human health vaccine products consist
of preventive pediatric, adolescent and adult vaccines. The Company sells these
human health vaccines primarily to physicians, wholesalers, physician
distributors and government entities.

The Animal Health segment discovers, develops, manufactures and markets a wide
range of veterinary pharmaceutical and vaccine products, as well as health
management solutions and services, for the prevention, treatment and control of
disease in all major livestock and companion animal species. The Company also
offers an extensive suite of digitally connected identification, traceability
and monitoring products. The Company sells its products to veterinarians,
distributors, animal producers, farmers and pet owners.

Spin-Off of Organon & Co.



On June 2, 2021, Merck completed the spin-off of products from its women's
health, biosimilars and established brands businesses into a new, independent,
publicly traded company named Organon & Co. (Organon) through a distribution of
Organon's publicly traded stock to Company shareholders. The distribution is
expected to qualify and has been treated as tax-free to the Company and its
shareholders for U.S. federal income tax purposes. The established brands
included in the transaction consisted of dermatology, non-opioid pain
management, respiratory, select cardiovascular products, as well as the rest of
Merck's diversified brands franchise. Merck's existing research pipeline
programs continue to be owned and developed within Merck as planned. The
historical results of the businesses that were contributed to Organon in the
spin-off have been reflected as discontinued operations in the Company's
consolidated financial statements through the date of the spin-off (see Note 3
to the consolidated financial statements).



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Overview

Financial Highlights

                                                                              % Change                                                     % Change
                                                                              Excluding                                                    Excluding
($ in millions except per share                                                Foreign                                                      Foreign
amounts)                              2022              % Change              Exchange              2021              % Change             Exchange              2020
Sales                              $ 59,283                    22  %                 26  %       $ 48,704                   17  %                 16  %       $ 41,518

Net Income from Continuing
Operations Attributable to Merck &
Co., Inc.:
GAAP                               $ 14,519                    18  %                 21  %       $ 12,345                       *                     *       $  4,519
Non-GAAP (1)                       $ 19,005                    40  %                 43  %       $ 13,623                   81  %                 98  %       $  7,545

Earnings per Common Share Assuming
Dilution from Continuing
Operations Attributable to Merck &
Co., Inc. Common Shareholders:
GAAP                               $   5.71                    17  %                 21  %       $   4.86                       *                     *       $   1.78
Non-GAAP (1)                       $   7.48                    39  %                 43  %       $   5.37                   81  %                 98  %       $   2.97


* > 100%

(1) Non-GAAP net income and non-GAAP earnings per share (EPS) exclude
acquisition and divestiture-related costs, restructuring costs, gains and losses
from investments in equity securities, and certain other items from Merck's
results prepared in accordance with generally accepted accounting principles in
the U.S. (GAAP). In 2022, the Company changed the treatment of certain items for
purposes of its non-GAAP reporting. Prior periods have been recast to conform to
the current presentation. For further discussion and a reconciliation of GAAP to
non-GAAP net income and EPS, see "Non-GAAP Income and Non-GAAP EPS from
Continuing Operations" below.

Executive Summary

Merck's 2022 results reflect sustained strong demand for the Company's
innovative product portfolio benefiting patients globally, enabled by strong
operational and commercial execution, the completion of business development
transactions to support its science-led strategy, as well as progress in its
pipeline across therapeutic areas, modalities and stage of development.

                     [[Image Removed: mrk-20221231_g3.jpg]]

Worldwide sales were $59.3 billion in 2022, an increase of 22% compared with
2021, or 26% excluding the unfavorable effect of foreign exchange. The sales
increase was primarily due to growth in virology (driven by the benefit of
Lagevrio sales), oncology, vaccines and hospital acute care. Sales within the
Animal Health business were consistent with prior year. As discussed below,
COVID-19-related disruptions negatively affected sales in 2022, but to a lesser
extent than in 2021, which benefited year-over-year sales growth.

Merck continues to execute strategic business development opportunities to augment its robust internal pipeline with compelling external science. Highlights of 2022 activity include the following:

•Exercised an option to jointly develop and commercialize personalized therapeutic cancer vaccine mRNA-4157/V940 under an existing collaboration and license agreement with Moderna, Inc. (Moderna).



•Entered into a collaboration with Orna Therapeutics (Orna), a company
pioneering a new investigational class of engineered circular RNA therapies, to
discover, develop, and commercialize multiple programs, including vaccines and
therapeutics in the areas of infectious disease and oncology.

•Entered into a global co-development and co-commercialization agreement for Orion Corporation's (Orion) investigational candidate ODM-208 (MK-5684) currently being evaluated for the treatment of patients with metastatic castration-resistant prostate cancer (mCRPC).


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•Entered into a license and collaboration agreement with Sichuan Kelun-Biotech
Biopharmaceutical Co., Ltd. (Kelun-Biotech) for the development, manufacture and
commercialization of an investigational antibody drug conjugate (ADC) (MK-1200)
for the treatment of solid tumors.

•Exercised an option to obtain an exclusive license (outside of Chinese mainland, Hong Kong, Macau and Taiwan) for the development, manufacture and commercialization of Kelun-Biotech's trophoblast antigen 2 (TROP2)-targeting ADC programs, including its lead compound SKB-264 (MK-2870).



•Entered into a license and collaboration agreement expanding the Company's
relationship with Kelun-Biotech pursuant to which Merck gained exclusive rights
for the research, development, manufacture and commercialization of up to seven
investigational preclinical ADCs for the treatment of cancer (Kelun-Biotech
retained rights for certain licensed and option ADCs for Chinese mainland, Hong
Kong and Macau); the transaction closed in February 2023.

•Entered into agreement to acquire Imago BioSciences, Inc. (Imago), a clinical
stage biopharmaceutical company developing new medicines for the treatment of
myeloproliferative neoplasms and other bone marrow diseases; the acquisition
closed in January 2023.

During 2022, the Company received numerous regulatory approvals within oncology.
Keytruda received approval for additional indications in the U.S. and/or
internationally as monotherapy in the therapeutic areas of biliary, colorectal,
endometrial, gastric, melanoma, small intestine and renal cell cancers, as well
as in combination with chemotherapy in the therapeutic areas of breast and
cervical cancers. Keytruda was also approved in combination with Lenvima in
Japan for the treatment of certain adult patients with radically unresectable or
metastatic renal cell carcinoma (RCC). Lenvima is being developed in
collaboration with Eisai Co., Ltd. (Eisai). Lynparza, which is being developed
in collaboration with AstraZeneca PLC (AstraZeneca), received approval in the
U.S., the European Union (EU) and Japan for the adjuvant treatment of certain
adult patients with high-risk early breast cancer and in the EU for the
treatment of certain patients with mCRPC.

Also in 2022, Vaxneuvance, a vaccine to help prevent pneumococcal disease, was
approved for expanded indications in the U.S. and the EU to include use in
infants, adolescents and children. Additionally in 2022, Lyfnua (gefapixant) was
approved in Japan for adults with refractory or unexplained chronic cough. In
addition, in 2022, Lagevrio, which is being developed in a collaboration with
Ridgeback Biotherapeutics LP (Ridgeback), received emergency conditional
approval in China for the treatment of mild to moderate COVID-19 in adults who
are at risk for progressing to severe COVID-19.

In addition to the recent regulatory approvals discussed above, the Company advanced its late-stage pipeline with several regulatory submissions.



Keytruda is under review in the U.S. and/or internationally for supplemental
indications for the treatment of certain patients with hepatocellular, Merkel
cell, non-small-cell lung and urothelial cancers, as well as primary mediastinal
B-cell lymphoma (PMBCL). Lynparza is under review for supplemental indications
in the U.S. and Japan for the treatment of certain patients with mCRPC. MK-4482,
Lagevrio, an investigational oral antiviral COVID-19 medicine, is under a
rolling review by the European Medicines Agency (EMA); the Committee for
Medicinal Products for Human Use of the EMA has recommended the refusal of the
marketing authorization, which Merck and Ridgeback intend to appeal. MK-7264,
gefapixant, a selective, non-narcotic, orally-administered, investigational
P2X3-receptor antagonist being developed for the treatment of refractory,
chronic cough is under review in the U.S. and the EU.

The Company's Phase 3 oncology programs include:

•Keytruda in the therapeutic areas of biliary, cutaneous squamous cell, gastric, hepatocellular, mesothelioma, ovarian, prostate and small-cell lung cancers;

•Lynparza in combination with Keytruda for non-small-cell lung and small-cell lung cancers;

•Lenvima in combination with Keytruda for colorectal, esophageal, gastric, head and neck, melanoma and non-small-cell lung cancers;

•MK-1308A, the coformulation of quavonlimab, Merck's novel investigational anti-CTLA-4 antibody, and pembrolizumab for RCC;

•MK-3475, subcutaneous pembrolizumab for non-small-cell lung cancer (NSCLC);

•MK-3475A, the subcutaneous coformulation of pembrolizumab with hyaluronidase, for NSCLC;



•MK-4280A, the coformulation of favezelimab, Merck's novel investigational
anti-LAG3 therapy, and pembrolizumab for colorectal cancer and hematological
malignancies;

•Welireg for RCC;
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•MK-7119, Tukysa (tucatinib), which is being developed in collaboration with Seagen Inc. (Seagen), for breast and colorectal cancers; and

•MK-7684A, the coformulation of vibostolimab, an anti-TIGIT therapy, and pembrolizumab for melanoma, non-small-cell and small-cell lung cancers.

Additionally, the Company currently has candidates in Phase 3 clinical development in several other therapeutic areas including:

•V116, an investigational 21-valent pneumococcal conjugate vaccine for the prevention of invasive pneumococcal disease and pneumococcal pneumonia in adults;

•MK-7962, sotatercept, for the treatment of pulmonary arterial hypertension (PAH);

•MK-1654, clesrovimab, for the prevention of respiratory syncytial virus;



•MK-8591A, islatravir in combination with doravirine for the treatment of HIV-1
infection (which is on partial clinical hold for higher doses than those used in
current clinical trials); and

•MK-4482, Lagevrio, which is reflected in Phase 3 development in the U.S. as it remains investigational following Emergency Use Authorization in 2021.

Merck's capital allocation priorities are to make investments in its business to
drive near- and long-term growth, including investing in opportunities to
address important unmet medical needs and supporting the Company's commercial
opportunities. In addition, Merck remains committed to its dividend and will
continue to pursue the most compelling external science through value-enhancing
business development transactions. Research and development expenses in 2022
reflect higher clinical development spending particularly in the therapeutic
areas of oncology, cardiovascular, infectious diseases and vaccines.

                     [[Image Removed: mrk-20221231_g4.jpg]]

In November 2022, Merck's Board of Directors approved an increase to the
Company's quarterly dividend, raising it to $0.73 per share from $0.69 per share
on the Company's outstanding common stock. During 2022, the Company returned
$7.0 billion to shareholders through dividends.

  [[Image Removed: mrk-20221231_g5.jpg]][[Image Removed: mrk-20221231_g6.jpg]]
GAAP and Non-GAAP EPS were negatively affected in 2022, 2021 and 2020 by $0.22,
$0.65, and $1.56, respectively, of charges for certain upfront and pre-approval
milestone payments related to collaborations and licensing agreements, as well
as charges related to pre-approval assets obtained in transactions accounted for
as asset acquisitions.

War in Ukraine

In February 2022, Russia invaded Ukraine. The Company's primary concerns are the
safety and well-being of its employees and ensuring patients and customers have
continued access to medicines and vaccines needed for patient and public health.
The Company is working cross-functionally across the globe to monitor and
mitigate interruptions to business continuity resulting from the war, including
its impact on Merck's supply chain, operations and clinical trials. For
humanitarian reasons, the Company is continuing to supply essential medicines
and vaccines in Russia while working to maintain compliance with international
sanctions. Merck is donating profits
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resulting from its operations in Russia to humanitarian causes. The Company does
not have research or manufacturing facilities in Russia, currently does not plan
to make further investments in Russia, and has suspended screening and
enrollment in ongoing clinical trials as well as planning for new studies in
Russia, although the Company continues to treat patients already enrolled in
existing clinical trials and collect data from these studies. The Company is
also using its resources to help alleviate the humanitarian crisis in Ukraine,
including through donations of funds and products. The financial impacts of the
war were immaterial to the Company's consolidated financial statements for 2022.
Sales to Russia were approximately 1% of total Merck consolidated sales for 2022
and are expected to decline in future periods. The Company is unable to
determine at this time the future direct or indirect impacts of this war on the
Company's business.

COVID-19

Although COVID-19-related disruptions had some negative effect on sales in 2022,
Merck continues to believe that global health systems and patients have largely
adapted to the impacts of the COVID-19 pandemic. Merck's revenue in 2022
benefited from sales of Lagevrio, which were $5.7 billion. Merck expects sales
of Lagevrio will decline significantly in 2023 to approximately $1.0 billion.

In 2021, COVID-19-related disruptions resulted in an estimated negative impact
to Pharmaceutical segment sales of approximately $1.3 billion because a
substantial portion of Pharmaceutical segment revenue is comprised of
physician-administered products, which were unfavorably affected by social
distancing measures and fewer well visits. Sales in 2021 benefited from $952
million of Lagevrio sales.

In April 2021, Merck announced it was discontinuing the development of MK-7110
for the treatment of hospitalized patients with COVID-19, which was obtained as
part of Merck's acquisition of OncoImmune (see Note 4 to the consolidated
financial statements). This decision resulted in charges of $207 million to Cost
of sales in 2021.

Operating expenses in 2021 reflect a minor positive effect as investments in
COVID-19-related research largely offset the favorable impact of lower spending
in other areas due to the COVID-19 pandemic.

In March 2021, Merck announced it had entered into multiple agreements to
support efforts to expand manufacturing capacity and supply of
SARS-CoV-2/COVID-19 medicines and vaccines. The Biomedical Advanced Research and
Development Authority (BARDA), a division of the Office of the Assistant
Secretary for Preparedness and Response within the U.S. Department of Health and
Human Services, provided Merck with $102 million of funding in the first quarter
of 2022 to adapt and make available a number of existing manufacturing
facilities for the production of SARS-CoV-2/COVID-19 vaccines and medicines. The
funding was recognized as a reduction to Cost of sales over the expected
production period, offsetting the depreciation expense related to the amounts
that were capitalized in connection with the modification of the manufacturing
facilities. Merck and Johnson & Johnson have commenced an arbitration regarding
a dispute concerning two agreements pursuant to which Merck was supporting the
manufacturing and supply of Johnson & Johnson's SARS-CoV-2/COVID-19 vaccine and
vaccine drug product. The amounts included in the consolidated financial
statements for these agreements were immaterial in 2022. Merck does not believe
the outcome of the arbitration will have a material impact on the Company's
financial statements.

Pricing



Global efforts toward health care cost containment continue to exert pressure on
product pricing and market access worldwide. Changes to the U.S. health care
system enacted in prior years as part of health care reform, as well as
increased purchasing power of entities that negotiate on behalf of Medicare,
Medicaid, and private sector beneficiaries, have contributed to pricing
pressure. In several international markets, government-mandated pricing actions
have reduced prices of generic and patented drugs. In addition, the Company's
sales performance in 2022 was negatively affected by other cost-reduction
measures taken by governments and other third parties to lower health care
costs. In 2022, the U.S. Congress passed the Inflation Reduction Act, which
makes significant changes to how drugs are covered and paid for under the
Medicare program, including the creation of financial penalties for drugs whose
prices rise faster than the rate of inflation, redesign of the Medicare Part D
program to require manufacturers to bear more of the liability for certain drug
benefits, and government price-setting for certain Medicare Part D drugs
(starting in 2026) and Medicare Part B drugs (starting in 2028). In the U.S.,
the Biden Administration and Congress continue to discuss legislation designed
to control health care costs, including the cost of drugs. The Company
anticipates all of these actions and additional actions in the future will
negatively affect sales and profits.

Supply Chain



As a result of global macroeconomic conditions, the Company is experiencing some
minor disruption and volatility in its global supply chain network. These
disruptions could increase in the future and cause delays in shipments of raw
materials and packaging, as well as related cost inflation.
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Operating Results

Sales
                                                                           % Change                                                       % Change
                                                                          Excluding                                                      Excluding
                                                                           Foreign                                                        Foreign
($ in millions)                   2022              % Change               Exchange              2021              % Change               Exchange              2020
United States                  $ 27,206                    21  %                  21  %       $ 22,425                    14  %                  14  %       $ 19,588
International                    32,077                    22  %                  29  %         26,279                    20  %                  17  %         21,930
Total                          $ 59,283                    22  %                  26  %       $ 48,704                    17  %                  16  %       $ 41,518


Worldwide sales grew 22% in 2022 attributable in part to higher sales in the
virology franchise driven by Lagevrio. Also contributing to revenue growth were
higher sales in the oncology franchise largely due to strong growth of Keytruda
and increased alliance revenue from Lenvima and Lynparza, as well as higher
sales in the vaccines franchise, primarily attributable to growth in
Gardasil/Gardasil 9 and the launch of Vaxneuvance for pediatric use. Higher
sales of hospital acute care products, including Bridion, Zerbaxa, Dificid and
Prevymis, as well as higher revenue related to third-party manufacturing
arrangements also drove revenue growth in 2022. As discussed above,
COVID-19-related disruptions had some negative effects on sales in 2022, but to
a lesser extent than in 2021, which benefited year-over-year sales growth. Sales
growth in 2022 was partially offset by lower sales of diabetes products Januvia
and Janumet, the Pneumovax 23 vaccine, and virology products Isentress/Isentress
HD.

Sales in the U.S. grew 21% in 2022 primarily driven by higher sales of Keytruda,
Lagevrio, Gardasil 9, as well as increased alliance revenue from Lenvima and
Reblozyl (obtained as part of the Acceleron Pharma Inc. (Acceleron) acquisition
in November 2021), and the launch of Vaxneuvance for pediatric use. Higher sales
of Bridion, Welireg, Zerbaxa and Dificid, as well as increased revenue from
third-party manufacturing arrangements also contributed to U.S. sales growth in
2022. Lower sales of Pneumovax 23 and Januvia partially offset revenue growth in
the U.S. in 2022.

International sales grew 22% in 2022 primarily due to higher sales of Lagevrio,
Gardasil/Gardasil 9, Keytruda, and Zerbaxa, as well as increased revenue from
third-party manufacturing arrangements, partially offset by lower sales of
Januvia/Janumet, Simponi, Isentress/Isentress HD, Remicade, and Pneumovax 23.
International sales represented 54% of total sales in both 2022 and 2021.

See Note 19 to the consolidated financial statements for details on sales of the
Company's products. A discussion of performance for select products in the
franchises follows.

Pharmaceutical Segment

Oncology
                                                                        % Change                                                       % Change
                                                                       Excluding                                                      Excluding
                                                                        Foreign                                                        Foreign
($ in millions)                2022              % Change               Exchange              2021              % Change               Exchange              2020
Keytruda                    $ 20,937                    22  %                  27  %       $ 17,186                    20  %                  18  %       $ 14,380
Alliance Revenue - Lynparza
(1)                            1,116                    13  %                  18  %            989                    36  %                  35  %     

725


Alliance Revenue - Lenvima
(1)                              876                    24  %                  28  %            704                    21  %                  20  %     

580


Alliance Revenue - Reblozyl
(2)                              166                        *                      *             17                        -                      -              -


* > 100%

(1) Alliance revenue represents Merck's share of profits, which are product sales net of cost of sales and commercialization costs (see Note 5 to the consolidated financial statements).

(2) Alliance revenue represents royalties and, for 2022, also includes a payment received related to the achievement of a regulatory approval milestone (see Note 5 to the consolidated financial statements).



Keytruda is an anti-PD-1 (programmed death receptor-1) therapy that has been
approved as monotherapy for the treatment of certain patients with cervical
cancer, classical Hodgkin lymphoma, cutaneous squamous cell carcinoma,
esophageal or gastroesophageal junction (GEJ) carcinoma, head and neck squamous
cell carcinoma (HNSCC), hepatocellular carcinoma (HCC), NSCLC, melanoma, Merkel
cell carcinoma, microsatellite instability-high (MSI-H) or mismatch repair
deficient (dMMR) cancer (solid tumors) including MSI-H/dMMR colorectal cancer,
MSI-H/dMMR advanced endometrial carcinoma, PMBCL, tumor mutational burden-high
(TMB-H) cancer (solid tumors), and urothelial carcinoma, including non-muscle
invasive bladder cancer. Additionally, Keytruda is approved as monotherapy for
the adjuvant treatment of certain patients with RCC at intermediate-high or high
risk of recurrence and for certain patients with completely resected stage IIB,
IIC or III melanoma, and for adjuvant treatment following resection and
platinum-based chemotherapy for adult patients with stage IB (T2a ?4 cm), II, or
IIIA NSCLC. Keytruda
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is also approved for certain patients with high-risk early-stage triple-negative
breast cancer (TNBC) in combination with chemotherapy as neoadjuvant treatment,
and then continued as a single agent as adjuvant treatment after surgery. In
addition, Keytruda is approved for the treatment of certain patients in
combination with chemotherapy for metastatic squamous and nonsquamous NSCLC, in
combination with chemotherapy, with or without bevacizumab for advanced cervical
cancer, in combination with chemotherapy for esophageal cancer, in combination
with trastuzumab, fluoropyrimidine- and platinum-containing chemotherapy for
human epidermal growth factor 2 (HER2)-positive gastric or GEJ adenocarcinoma,
in combination with chemotherapy for HNSCC, in combination with chemotherapy for
locally recurrent unresectable or metastatic TNBC, in combination with axitinib
for advanced RCC, and in combination with Lenvima for certain patients with
advanced endometrial carcinoma or advanced RCC. The Keytruda clinical
development program includes studies across a broad range of cancer types.

Global sales of Keytruda grew 22% in 2022 primarily driven by higher demand as
the Company continues to launch Keytruda with multiple new indications globally.
Sales in the U.S. continue to build across the multiple approved metastatic
indications, in particular for the treatment of certain types of RCC, HNSCC, and
MSI-H cancers. Keytruda sales growth in the U.S. also benefited from increased
uptake across recent launches in earlier-stage indications including in
high-risk early stage TNBC, as well as certain types of RCC and melanoma.
Keytruda sales growth in international markets reflects continued uptake
predominately for the NSCLC, HNSCC and RCC indications, particularly in Europe.

Keytruda recently received numerous regulatory approvals summarized below.



       Date                                             Approval
                   EC approval as monotherapy for the adjuvant treatment of 

adults with RCC at

January 2022 increased risk of recurrence following nephrectomy, or following nephrectomy and


                   resection of metastatic lesions, based on the 

KEYNOTE-564 trial.

Japan's Ministry of Health, Labor and Welfare (MHLW) 

approval of the combination

February 2022 of Keytruda plus Lenvima for radically unresectable or metastatic RCC, based on


                   the CLEAR (Study 307)/KEYNOTE-581 trial.
                   MHLW approval for the treatment of adult patients with 

advanced or recurrent TMB-H

February 2022 solid tumors that have progressed after chemotherapy (limited to use when


                   difficult to treat with standard of care), based on the 

KEYNOTE-158 trial.

U.S. Food and Drug Administration (FDA) approval as a 

single agent for the


                   treatment of patients with advanced endometrial 

carcinoma that is MSI-H or dMMR

March 2022 who have disease progression following prior systemic therapy in any setting and


                   are not candidates for curative surgery or radiation, 

based on the KEYNOTE-158


                   trial (Cohorts D & K).
                   EC approval in combination with chemotherapy, with or 

without bevacizumab, for the

April 2022 treatment of persistent, recurrent or metastatic cervical cancer in certain adults


                   whose tumors express PD-L1, based on the KEYNOTE-826 

trial.


                   EC approval as monotherapy for the treatment of certain 

adult patients with

April 2022 unresectable or metastatic MSI-H/dMMR colorectal, gastric, small intestine or


                   biliary cancer, as well as advanced or recurrent 

MSI-H/dMMR endometrial carcinoma,


                   based on the KEYNOTE-164 and KEYNOTE-158 trials.
                   EC approval in combination with chemotherapy as 

neoadjuvant treatment, and then

May 2022 continued as monotherapy as adjuvant treatment after surgery for adults with


                   locally advanced or early-stage TNBC at high risk of 

recurrence, based on the


                   KEYNOTE-522 trial.
                   EC approval as monotherapy for the adjuvant treatment of 

adults and adolescents


                   aged 12 years and older with stage IIB or IIC melanoma 

and who have undergone

June 2022 complete resection, based on the KEYNOTE-716 trial. EC approval expanding the


                   indications in advanced (unresectable or metastatic) 

melanoma and stage III


                   melanoma with lymph node involvement (as adjuvant 

treatment following complete


                   resection) to include adolescent patients aged 12 years 

and older.


                   MHLW approval as monotherapy for the adjuvant treatment 

of certain patients with

August 2022 RCC at increased risk of recurrence following nephrectomy, or following


                   nephrectomy and resection of metastatic lesions, based 

on the KEYNOTE-564 trial.


                   MHLW approval in combination with chemotherapy as 

neoadjuvant treatment, and then

September 2022 continued as monotherapy as adjuvant treatment after surgery for patients with


                   hormone receptor-negative and HER2-negative breast 

cancer at high risk of


                   recurrence, based on the KEYNOTE-522 trial.


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                    MHLW approval in combination with chemotherapy, with or 

without bevacizumab, for

September 2022 the treatment of patients with advanced or recurrent cervical cancer with no prior


                    chemotherapy who are not amenable to curative 

treatment, based on the KEYNOTE-826


                    trial.

September 2022 MHLW approval as monotherapy for the adjuvant treatment of patients with stage IIB


                    or IIC melanoma after complete resection, based on the 

KEYNOTE-716 trial.

China's National Medical Products Administration (NMPA) 

approval as monotherapy

October 2022 for the treatment of patients with HCC who have been previously treated with


                    sorafenib or oxaliplatin-based chemotherapy, based on 

the KEYNOTE-394 trial.


                    NMPA approval for the treatment of patients with 

high-risk early-stage TNBC whose

November 2022 tumors express PD-L1, in combination with chemotherapy as neoadjuvant treatment,


                    and then continued as a monotherapy as adjuvant 

treatment after surgery, based on


                    the KEYNOTE-522 trial.
                    FDA approval as a single agent for adjuvant treatment 

following surgical resection

January 2023 and platinum-based chemotherapy for adult patients with stage IB (T2a ?4 cm), II,


                    or IIIA NSCLC, based on the KEYNOTE-091 trial.


The Company is a party to certain third-party license agreements pursuant to
which the Company pays royalties on sales of Keytruda. Under the terms of the
more significant of these agreements, Merck pays a royalty of 6.5% on worldwide
sales of Keytruda through December 2023 to one third party; this royalty will
decline to 2.5% for 2024 through 2026 and will terminate thereafter. The Company
pays an additional 2% royalty on worldwide sales of Keytruda to another third
party, the termination date of which varies by country; this royalty will expire
in the U.S. in September 2024 and on varying dates in major European markets in
the second half of 2025. The royalties are included in Cost of sales.

Lynparza is an oral poly (ADP-ribose) polymerase (PARP) inhibitor being
developed as part of a collaboration with AstraZeneca (see Note 5 to the
consolidated financial statements). Lynparza is approved for the treatment of
certain types of advanced or recurrent ovarian, early or metastatic breast,
metastatic pancreatic and metastatic castration-resistant prostate cancers.
Alliance revenue related to Lynparza grew 13% in 2022 largely due to higher
demand globally across the multiple approved indications, particularly in the
U.S. largely attributable to uptake in the earlier-stage breast cancer
indication following approval by the FDA in March 2022.

Lynparza received several regulatory approvals in 2022 summarized below.



       Date                                             Approval
                    FDA approval for the adjuvant treatment of adult 

patients with deleterious or

March 2022 suspected deleterious germline BRCA-mutated, HER2-negative high-risk early breast


                    cancer who have been treated with neoadjuvant or 

adjuvant chemotherapy, based on


                    the OlympiA trial.

August 2022 MHLW approval for the adjuvant treatment of patients with BRCA-mutated,


                    HER2-negative high recurrent risk breast cancer, based 

on the OlympiA trial.


                    EC approval as monotherapy or in combination with 

endocrine therapy for the

August 2022 adjuvant treatment of adult patients with germline BRCA1/2-mutations who have


                    HER2-negative, high-risk early breast cancer previously 

treated with neoadjuvant


                    or adjuvant chemotherapy, based on the OlympiA trial.
                    NMPA approval as first-line maintenance treatment for 

adult patients with


                    advanced epithelial ovarian, fallopian tube or primary 

peritoneal cancer who are

September2022 in complete or partial response to first-line platinum-based chemotherapy in


                    combination with bevacizumab and whose cancer is 

associated with homologous


                    recombination deficiency (HRD)-positive status, based 

on the PAOLA-1 trial.


                    EC approval in combination with abiraterone and 

prednisone or prednisolone for

December 2022 the treatment of adult patients with mCRPC in whom chemotherapy is not clinically


                    indicated, based on the PROpel trial.


Lenvima is an oral receptor tyrosine kinase inhibitor being developed as part of
a collaboration with Eisai (see Note 5 to the consolidated financial
statements). Lenvima is approved for the treatment of certain types of thyroid
cancer, RCC, HCC, in combination with everolimus for certain patients with
advanced RCC, and in combination with Keytruda for certain patients with
advanced endometrial carcinoma or advanced RCC. Alliance revenue related to
Lenvima grew 24% in 2022 reflecting uptake in the advanced RCC and advanced
endometrial carcinoma indications, particularly in the U.S.

Reblozyl is a first-in-class erythroid maturation recombinant fusion protein
obtained as part of Merck's November 2021 acquisition of Acceleron that is being
developed and commercialized through a global collaboration with Bristol Myers
Squibb (see Note 5 to the consolidated financial statements). Reblozyl is
approved for the treatment of certain types of anemia. Merck recorded alliance
revenue of $166 million in 2022, which includes
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royalties of $146 million, as well as the receipt of a regulatory approval
milestone payment of $20 million, compared with alliance revenue of $17 million
in 2021.

Vaccines
                                                                             % Change                                                      % Change
                                                                            Excluding                                                     Excluding
                                                                             Foreign                                                       Foreign
($ in millions)                      2022             % Change               Exchange              2021             % Change               Exchange              2020
Gardasil/Gardasil 9               $ 6,897                    22  %                  27  %       $ 5,673                    44  %                  39  %       $ 3,938
ProQuad                               839                     9  %                  11  %           773                    14  %                  13  %           678
M-M-R II                              411                     5  %                   7  %           391                     3  %                   3  %           378
Varivax                               991                     2  %                   4  %           971                    18  %                  18  %           823
Pneumovax 23                          602                   (33) %                 (30) %           893                   (18) %                 (19) %         1,087


Combined worldwide sales of Gardasil and Gardasil 9, vaccines to help prevent
certain cancers and other diseases caused by certain types of human
papillomavirus (HPV), grew 22% in 2022 driven primarily by strong demand outside
of the U.S., particularly in China, which also benefited from increased supply.
Sales of Gardasil 9 in the U.S. increased due to public sector buying patterns
and higher pricing, partially offset by lower demand.

In 2022, China's NMPA expanded the use of Gardasil 9 for use in girls and women
ages 9 to 45. The vaccine was previously approved for use in girls and women
ages 16 to 26.

The Company is a party to certain third-party license agreements pursuant to
which the Company pays royalties on sales of Gardasil/Gardasil 9. Under the
terms of the more significant of these agreements, Merck pays a 7% royalty on
worldwide sales of Gardasil/Gardasil 9 to one third party (which expires in
December 2023) and an additional 7% royalty on sales of Gardasil/Gardasil 9 in
the U.S. to another third party (which expires in December 2028). The royalties
are included in Cost of sales.

Global sales of ProQuad, a pediatric combination vaccine to help protect against
measles, mumps, rubella and varicella, grew 9% in 2022 primarily due to higher
pricing in the U.S. and higher demand in Europe.

Worldwide sales of M-M-R II, a vaccine to help protect against measles, mumps and rubella, grew 5% in 2022 primarily due to higher pricing in the U.S.



Global sales of Varivax, a vaccine to help prevent chickenpox (varicella), grew
2% in 2022 primarily reflecting higher pricing in the U.S., partially offset by
lower tenders in Latin America.

Worldwide sales of Pneumovax 23, a vaccine to help prevent pneumococcal disease,
declined 33% in 2022 primarily reflecting lower demand in the U.S. as the market
continues to shift toward newer adult pneumococcal conjugate vaccines following
changes in the recommendations of the U.S. Centers for Disease Control and
Prevention's (CDC's) Advisory Committee on Immunization Practices (ACIP) in
2021. The Company expects the decline in U.S. sales of Pneumovax 23 to continue.
Lower demand in Europe also contributed to the Pneumovax 23 sales decline in
2022.

In June 2022, the FDA approved an expanded indication for Vaxneuvance to include
use in individuals 6 weeks of age and older. The FDA's approval was based on
data from seven randomized, double-blind clinical studies assessing safety,
tolerability and immunogenicity of Vaxneuvance in infants and children. Also in
June 2022, the CDC's ACIP unanimously voted to include Vaxneuvance as a
recommended option for vaccination in infants and children, including routine
use in children under 2 years of age. These recommendations subsequently were
adopted by the director of the CDC and the U.S. Department of Health and Human
Services, and published in the CDC's Morbidity and Mortality Weekly Report
(MMWR). The ACIP also unanimously voted to include Vaxneuvance in the Vaccines
for Children program. In October 2022, the EC approved an expanded indication
for Vaxneuvance to include use in infants, children and adolescents from 6 weeks
to less than 18 years of age. Vaxneuvance was previously approved for use in the
U.S. and the EU in 2021 for individuals 18 years of age and older. In September
2022, Vaxneuvance was approved in Japan for use in adult patients. Vaxneuvance
remains under review in Japan for use in pediatric patients. Sales of
Vaxneuvance were $170 million in 2022, largely due to inventory stocking in the
U.S. Merck is party to a third-party licensing agreement pursuant to which the
Company pays a royalty of 7.25% on net sales of Vaxneuvance through 2026; this
royalty will decline to 2.5% on net sales from 2027 through 2035. The royalties
are included in Cost of sales.


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Hospital Acute Care
                                                                          % Change                                                      % Change
                                                                         Excluding                                                     Excluding
                                                                          Foreign                                                       Foreign
($ in millions)                   2022             % Change               Exchange              2021             % Change               Exchange              2020
Bridion                        $ 1,685                    10  %                  16  %       $ 1,532                    28  %                  27  %       $ 1,198
Prevymis                           428                    16  %                  24  %           370                    32  %                  30  %           281
Dificid                            263                    50  %                  50  %           175                    60  %                  60  %           110
Zerbaxa                            169                        *                      *            (1)                       *                      *           130
Welireg                            123                       **                     **            13                     -                      -                -


* Calculation not meaningful.

** >100%

Global sales of Bridion, for the reversal of two types of neuromuscular blocking
agents used during surgery, grew 10% in 2022 due to higher demand globally,
particularly in the U.S., largely attributable to Bridion's growing share among
neuromuscular blockade reversal agents and an increase in surgical procedures.
Bridion will lose market exclusivity in the EU in July 2023 and the Company
anticipates sales of Bridion in these markets will decline thereafter.

Worldwide sales of Prevymis, a medicine for prophylaxis (prevention) of
cytomegalovirus (CMV) infection and disease in adult CMV-seropositive recipients
of an allogenic hematopoietic stem cell transplant, grew 16% in 2022 due to
higher demand globally, particularly in the U.S. and Europe. In February 2023,
the FDA granted priority review for a supplemental New Drug Application for
Prevymis for prophylaxis of CMV disease in adult kidney transplant recipients at
high risk (D+/R-); the Prescription Drug User Fee Act (PDUFA), or target action,
date is June 5, 2023.

Worldwide sales of Dificid, for the treatment of C. difficile-associated diarrhea, grew 50% in 2022 due to higher demand in the U.S.

In December 2020, the Company temporarily suspended sales of Zerbaxa, a combination antibacterial and beta-lactamase inhibitor for the treatment of certain bacterial infections, and subsequently issued a product recall, following the identification of product sterility issues. As a result, the Company recorded an intangible asset impairment charge in 2020 related to Zerbaxa (see Note 9 to the consolidated financial statements). The phased resupply of Zerbaxa that was initiated in the fourth quarter of 2021 was completed in 2022.

Sales of Welireg, for the treatment of certain adult patients with von Hippel-Lindau disease-associated RCC, increased to $123 million in 2022 due to continued uptake in the U.S. following launch in 2021.



Cardiovascular
                                                                          % Change                                                     % Change
                                                                         Excluding                                                    Excluding
                                                                          Foreign                                                      Foreign
($ in millions)                   2022             % Change               Exchange             2021             % Change               Exchange             2020
Alliance Revenue -
Adempas/Verquvo (1)             $  341                     -  %                   -  %       $  342                    22  %                  22  %       $  281
Adempas                            238                    (6) %                   7  %          252                    14  %                  11  %          220

(1) Alliance revenue represents Merck's share of profits from sales in Bayer's marketing territories, which are product sales net of cost of sales and commercialization costs (see Note 5 to the consolidated financial statements).



Adempas and Verquvo are part of a worldwide collaboration with Bayer to market
and develop soluble guanylate cyclase (sGC) modulators (see Note 5 to the
consolidated financial statements). Adempas is approved for the treatment of
certain types of PAH and chronic thromboembolic pulmonary hypertension. Verquvo
is approved to reduce the risk of cardiovascular death and heart failure
hospitalization following a hospitalization for heart failure or need for
outpatient intravenous diuretics in adults with symptomatic chronic heart
failure and reduced ejection fraction. Verquvo was approved in the U.S., the EU
and Japan in 2021 and has since been approved in several other markets. Alliance
revenue from the collaboration was essentially flat in 2022 compared with 2021
reflecting higher profit share related to Adempas that was partially offset by
lower profit share for Verquvo reflecting higher launch costs. Revenue also
includes sales of Adempas and Verquvo in Merck's marketing territories. Sales of
Adempas in Merck's marketing territories declined 6% in 2022; excluding the
unfavorable effect of foreign exchange, sales grew 7% primarily reflecting
higher demand in Japan.


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Virology
                                                                                % Change                                                     % Change
                                                                               Excluding                                                    Excluding
                                                                                Foreign                                                      Foreign
($ in millions)                         2022             % Change               Exchange             2021             % Change               Exchange              2020
Lagevrio                             $ 5,684                        *                      *       $  952                        -                      -       $     -
Isentress/Isentress HD                   633                   (18) %                 (13) %          769                   (10) %                 (11) %           857


* > 100%

Lagevrio is an investigational oral antiviral COVID-19 medicine being developed
in a collaboration with Ridgeback (see Note 5 to the consolidated financial
statements). Following initial authorizations in certain markets in the fourth
quarter of 2021, Lagevrio has since received multiple additional authorizations
worldwide. The increase in sales of Lagevrio in 2022 primarily reflects higher
sales in the UK, Japan and the U.S., as well as the launch in Australia. In
December 2022, China's NMPA granted emergency conditional approval for Lagevrio
for the treatment of mild to moderate COVID-19 in adults who are at risk for
progressing to severe COVID-19. Merck expects sales of Lagevrio will decline
significantly in 2023 to approximately $1.0 billion reflecting in part the
waning impact of the COVID-19 pandemic.

Worldwide sales of Isentress/Isentress HD, an HIV integrase inhibitor for use in
combination with other antiretroviral agents for the treatment of HIV-1
infection, declined 18% in 2022 due to lower global demand, reflecting in part
competitive pressure particularly in Europe, Latin America and the U.S. The
Company expects competitive pressure for Isentress/Isentress HD to continue.
Isentress/Isentress HD will lose market exclusivity in the EU in July 2023 and
the Company anticipates sales declines of Isentress/Isentress HD in these
markets will accelerate thereafter.

Diabetes
                                                                          % Change                                                      % Change
                                                                         Excluding                                                     Excluding
                                                                          Foreign                                                       Foreign
($ in millions)                   2022             % Change               Exchange              2021             % Change               Exchange              2020
Januvia/Janumet                $ 4,513                   (15) %                  (9) %       $ 5,288                     -  %                  (2) %       $ 5,276


Worldwide combined sales of Januvia and Janumet, medicines that help lower blood
sugar levels in adults with type 2 diabetes, declined 15% in 2022 primarily
reflecting the loss of exclusivity in several markets in Europe and the Asia
Pacific region, as well as lower demand in the U.S. The sales decline was
partially offset by increased demand in Latin America reflecting in part higher
government tenders.

While the key U.S. patent for Januvia and Janumet claiming the sitagliptin
compound expired in January 2023, as a result of favorable court rulings and
settlement agreements related to a later expiring patent directed to the
specific sitagliptin salt form of the products (see Note 11 to the consolidated
financial statements), the Company expects that these products will not lose
market exclusivity in the U.S. until May 2026. However, certain of the rulings
are currently being appealed, and an unfavorable court decision would likely
cause the products to lose exclusivity in the U.S. toward the end of 2023. As a
result of competitive pressures, the Company anticipates pricing and volume
declines for Januvia and Janumet in the U.S. in 2023 and thereafter.

The Company lost market exclusivity for Januvia in all of the EU and for Janumet
in some European countries in September 2022. Merck expects that exclusivity for
Janumet will be lost in other European countries in April 2023. While the
Company lost market exclusivity for Januvia in China in 2022 with the approval
of a generic equivalent product, the impact on sales in 2023 is expected to be
modest. It is anticipated that a generic equivalent of Janumet will be approved
in China in the first quarter of 2023, but the impact to sales in 2023 is also
expected to be modest.

Combined sales of Januvia and Janumet in Europe, China and the U.S. represented
19%, 11% and 36%, respectively, of total combined Januvia and Janumet sales in
2022.

In response to a request from a regulatory authority, Merck evaluated its
sitagliptin-containing products for the presence of nitrosamines. Nitrosamines
are organic compounds found at trace levels in water and food. Nitrosamines can
also result from chemical reactions and can form in drugs either due to the
drug's manufacturing process, chemical structure, or the conditions in which the
drugs are stored or packaged. The Company detected a nitrosamine identified as
Nitroso-STG-19 (NTTP) in some batches of its sitagliptin-containing medicines.
The Company has engaged with major health authorities around the world and has
implemented additional quality controls to ensure its portfolio of
sitagliptin-containing products meet health authorities' interim acceptable NTTP
limits for continuing distribution of product to the market. The Company is
making progress in its efforts to reduce the level
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of nitrosamines in its sitagliptin-containing medicines. However, difficulties
in reducing those levels, or achieving timely regulatory approvals for required
changes, could result in product shortages.

Animal Health Segment
                                                                           % Change                                                      % Change
                                                                          Excluding                                                     Excluding
                                                                           Foreign                                                       Foreign
($ in millions)                    2022             % Change               Exchange              2021             % Change               Exchange              2020
Livestock                       $ 3,300                     -  %                   7  %       $ 3,295                    12  %                  10  %       $ 2,939
Companion Animal                  2,250                    (1) %                   4  %         2,273                    29  %                  26  %         1,764


Sales of livestock products were essentially flat in 2022 primarily due to the
unfavorable effect of foreign exchange, offset by higher pricing, as well as
increased demand for ruminant and poultry products. Sales of companion animal
products declined 1% in 2022 reflecting the unfavorable effect of foreign
exchange and supply constraints for certain vaccines, largely offset by higher
pricing in the portfolio, as well as higher demand for the Bravecto line of
products, which had sales of $1.0 billion in 2022.

Costs, Expenses and Other
($ in millions)                           2022        % Change        2021        % Change        2020
Cost of sales                          $ 17,411           28  %    $ 13,626            -  %    $ 13,618
Selling, general and administrative      10,042            4  %       9,634            8  %       8,955
Research and development                 13,548           11  %      12,245           (9) %      13,397
Restructuring costs                         337          (49) %         661           15  %         575
Other (income) expense, net               1,501               *      (1,341)          51  %        (890)
                                       $ 42,839           21  %    $ 34,825           (2) %    $ 35,655

* Calculation not meaningful.

Cost of Sales



Cost of sales was $17.4 billion in 2022 and $13.6 billion in 2021. Cost of sales
includes $3.0 billion and $502 million in 2022 and 2021, respectively, related
to the collaboration with Ridgeback for Lagevrio (see Note 5 to the consolidated
financial statements). Cost of sales also includes the amortization of
intangible assets recorded in connection with acquisitions, collaborations, and
licensing arrangements, which totaled $2.0 billion in 2022 and $1.6 billion in
2021. Amortization expense in 2022 and 2021 includes $250 million and $153
million, respectively, of cumulative catch-up amortization related to Merck's
collaborations with AstraZeneca and Bayer, respectively (see Note 5 to the
consolidated financial statements). Additionally, costs in 2021 include charges
of $225 million related to the discontinuation of COVID-19 development programs
(see Note 4 to the consolidated financial statements). Also included in cost of
sales are expenses associated with restructuring activities, which amounted to
$205 million in 2022 and $160 million in 2021, primarily reflecting accelerated
depreciation and asset write-offs related to the planned sale or closure of
manufacturing facilities. Separation costs associated with manufacturing-related
headcount reductions have been incurred and are reflected in Restructuring costs
as discussed below.

Gross margin was 70.6% in 2022 compared with 72.0% in 2021. The gross margin
decline primarily reflects the unfavorable impacts of higher amortization of
intangible assets (noted above), as well as higher sales of Lagevrio and revenue
from third-party manufacturing arrangements, both of which have lower gross
margins. The gross margin decline was partially offset by the favorable effects
of product mix, foreign exchange and charges in 2021 related to the
discontinuation of COVID-19 development programs (noted above).

Selling, General and Administrative



Selling, general and administrative (SG&A) expenses were $10.0 billion in 2022,
an increase of 4% compared with 2021. The increase was primarily due to higher
administrative costs, as well as higher promotional spending and selling costs,
partially offset by the favorable effects of foreign exchange and lower
acquisition-related costs.

Research and Development



Research and development (R&D) expenses were $13.5 billion in 2022, an increase
of 11% compared with 2021 primarily due to higher intangible asset impairment
charges (largely related to nemtabrutinib), higher charges for upfront and
option payments related to collaborations and licensing arrangements, higher
compensation
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and benefit costs reflecting in part increased headcount to support expanded
clinical development activity, and increased clinical development spending. The
increase in R&D expenses was partially offset by a charge in 2021 for the
acquisition of Pandion Therapeutics, Inc. (Pandion).

R&D expenses are comprised of the costs directly incurred by Merck Research
Laboratories (MRL), the Company's research and development division that focuses
on human health-related activities, which were $7.7 billion in 2022 and $7.1
billion in 2021. Also included in R&D expenses are Animal Health research costs,
licensing costs and costs incurred by other divisions in support of R&D
activities, including depreciation, production and general and administrative,
which in the aggregate were $4.1 billion in 2022 and $4.7 billion in 2021. The
decrease in these expenses in 2022 largely reflects a $1.7 billion charge in
2021 for the acquisition of Pandion, partially offset by $690 million of upfront
and option payments in the aggregate for collaboration and licensing agreements
with Moderna, Orna and Orion. See Note 4 to the consolidated financial
statements for additional information related to these business development
transactions. R&D expenses also include impairment charges of $1.7 billion and
$275 million in 2022 and 2021, respectively, largely related to nemtabrutinib
(see Note 9 to the consolidated financial statements). The Company may recognize
additional impairment charges in the future related to the cancellation or delay
of other pipeline programs that were measured at fair value and capitalized in
connection with business combinations and such charges could be material. R&D
expenses also include expense or income related to changes in the estimated fair
value measurement of liabilities for contingent consideration recorded in
connection with business combinations. The Company recorded a net reduction in
expenses of $75 million in 2022 compared with $35 million of expenses in 2021
related to changes in these estimates.

Restructuring Costs



In 2019, Merck approved a global restructuring program (Restructuring Program)
as part of a worldwide initiative focused on further optimizing the Company's
manufacturing and supply network, as well as reducing its global real estate
footprint. This program is a continuation of the Company's plant rationalization
and builds on prior restructuring programs. The actions currently contemplated
under the Restructuring Program are expected to be substantially completed by
the end of 2023, with the cumulative pretax costs to be incurred by the Company
to implement the program estimated to be approximately $3.7 billion. Merck
expects to record charges of approximately $400 million in 2023 related to the
Restructuring Program. The Company anticipates the actions under the
Restructuring Program will result in cumulative annual net cost savings of
approximately $900 million by the end of 2023.

Restructuring costs, primarily representing separation and other related costs
associated with these restructuring activities, were $337 million in 2022 and
$661 million in 2021. Separation costs incurred were associated with actual
headcount reductions, as well as estimated expenses under existing severance
programs for involuntary headcount reductions that were probable and could be
reasonably estimated. Also included in restructuring costs are asset
abandonment, facility shut-down and other related costs, as well as
employee-related costs such as curtailment, settlement and termination charges
associated with pension and other postretirement benefit plans and share-based
compensation plan costs. For segment reporting, restructuring costs are
unallocated expenses.

Additional costs associated with the Company's restructuring activities are
included in Cost of sales, Selling, general and administrative expenses and
Research and development costs. The Company recorded aggregate pretax costs of
$666 million in 2022 and $868 million in 2021 related to restructuring program
activities (see Note 6 to the consolidated financial statements).

Other (Income) Expense, Net

Other (income) expense, net, was $1.5 billion of expense in 2022 compared with $1.3 billion of income in 2021 primarily due to net unrealized losses from investments in equity securities in 2022 compared with net realized and unrealized gains from investments in equity securities recorded in 2021.

For details on the components of Other (income) expense, net, see Note 15 to the consolidated financial statements.


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Segment Profits

($ in millions)                                       2022          2021          2020
Pharmaceutical segment profits                     $ 36,852      $ 30,977      $ 26,106
Animal Health segment profits                         1,963         1,950   

1,669


Other non-reportable segment profits                      -             -   

1


Other                                               (22,371)      (19,048)  

(21,913)

Income from Continuing Operations Before Taxes $ 16,444 $ 13,879

$ 5,863




Pharmaceutical segment profits are comprised of segment sales less standard
costs, as well as SG&A expenses directly incurred by the segment. Animal Health
segment profits are comprised of segment sales, less all cost of sales, as well
as SG&A and R&D expenses directly incurred by the segment. For internal
management reporting presented to the chief operating decision maker, Merck does
not allocate the remaining cost of sales not included in segment profits as
described above, R&D expenses incurred by MRL, or general and administrative
expenses, nor the cost of financing these activities. Separate divisions
maintain responsibility for monitoring and managing these costs, including
depreciation related to fixed assets utilized by these divisions and, therefore,
they are not included in segment profits. Also excluded from the determination
of segment profits are costs related to restructuring activities and acquisition
and divestiture-related costs, including the amortization of intangible assets
and amortization of purchase accounting adjustments, intangible asset impairment
charges, and expense or income related to changes in the estimated fair value
measurement of liabilities for contingent consideration. Additionally, segment
profits do not reflect other expenses from corporate and manufacturing cost
centers and other miscellaneous income or expense. These unallocated items are
reflected in "Other" in the above table. Also included in "Other" are
miscellaneous corporate profits (losses), as well as operating profits (losses)
related to third-party manufacturing arrangements.

Pharmaceutical segment profits grew 19% in 2022 primarily due to higher sales,
partially offset by higher administrative and promotional costs, as well as the
unfavorable effect of foreign exchange. Animal Health segment profits grew 1% in
2022 reflecting lower manufacturing costs, partially offset by higher selling
and administrative costs and the unfavorable effect of foreign exchange.

Taxes on Income



The effective income tax rates from continuing operations were 11.7% in 2022 and
11.0% in 2021. The tax rate from continuing operations in 2022 and 2021 reflect
a favorable mix of income and expense. The tax rate from continuing operations
in 2022 also reflects the favorable impact of net unrealized losses from
investments in equity securities and intangible asset impairment charges, which
were taxed at the U.S. tax rate. These items reduced domestic pretax income by
approximately $2.9 billion in 2022. The tax rate from continuing operations in
2021 also reflects higher foreign tax credits from ordinary business operations
that the Company was able to credit, the beneficial impact of the settlement of
a foreign tax matter, as well as a net tax benefit of $207 million related to
the settlement of certain federal income tax matters (see Note 16 to the
consolidated financial statements). Additionally, the tax rate from continuing
operations in 2021 reflects the unfavorable effect of a charge for the
acquisition of Pandion for which no tax benefit was recognized.

Non-GAAP Income and Non-GAAP EPS from Continuing Operations



Non-GAAP income and non-GAAP EPS are alternative views of the Company's
performance that Merck is providing because management believes this information
enhances investors' understanding of the Company's results since management uses
non-GAAP measures to assess performance. Non-GAAP income and non-GAAP EPS
exclude certain items because of the nature of these items and the impact that
they have on the analysis of underlying business performance and trends. The
excluded items (which should not be considered non-recurring) consist of
acquisition and divestiture-related costs, restructuring costs, income and
losses from investments in equity securities and certain other items. These
excluded items are significant components in understanding and assessing
financial performance.

Non-GAAP income and non-GAAP EPS are important internal measures for the
Company. Senior management receives a monthly analysis of operating results that
includes a non-GAAP EPS metric. Management uses non-GAAP measures internally for
planning and forecasting purposes and to measure the performance of the Company
along with other metrics. In addition, senior management's annual compensation
is derived in part using a non-GAAP pretax income metric. Since non-GAAP income
and non-GAAP EPS are not measures determined in accordance with GAAP, they have
no standardized meaning prescribed by GAAP and, therefore, may not be
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comparable to the calculation of similar measures of other companies. The
information on non-GAAP income and non-GAAP EPS should be considered in addition
to, but not as a substitute for or superior to, net income and EPS prepared in
accordance with GAAP.

In 2022, the Company changed the treatment of certain items for purposes of its
non-GAAP reporting. Historically, Merck's non-GAAP results excluded expenses for
upfront and pre-approval milestone payments related to collaborations and
licensing agreements, as well as charges related to pre-approval assets obtained
in transactions accounted for as asset acquisitions, to the extent the charges
were considered by the Company to be significant to the results of a particular
period (as well as any related adjustments recorded in a subsequent period).
Merck's non-GAAP results no longer exclude charges related to these items. Prior
periods have been recast to conform to the current presentation.

A reconciliation between GAAP financial measures and non-GAAP financial measures (from continuing operations) is as follows:



($ in millions except per share amounts)                               2022              2021              2020

Income from continuing operations before taxes as reported under GAAP

$ 16,444          $ 13,879          $ 5,863
Increase (decrease) for excluded items:
Acquisition and divestiture-related costs (1)                          3,704             2,484            3,642
Restructuring costs                                                      666               868              880
Loss (income) from investments in equity securities, net               1,348            (1,884)          (1,292)

Other items: Charges for the discontinuation of COVID-19 development programs -

               225              305
Other                                                                      -                (4)             (20)
Non-GAAP income from continuing operations before taxes               22,162            15,568            9,378

Taxes on income from continuing operations as reported under GAAP 1,918

             1,521            1,340
Estimated tax benefit on excluded items (2)                            1,232               204              556

Net tax benefit from the settlement of certain federal income tax matters

                                                                    -               207                -

Adjustment to tax benefits recorded in conjunction with the 2015 Cubist Pharmaceuticals, Inc. acquisition

                                   -                 -              (67)
Non-GAAP taxes on income from continuing operations                    3,150             1,932            1,829
Non-GAAP net income from continuing operations                        19,012            13,636            7,549

Less: Net income attributable to noncontrolling interests as reported under GAAP

                                                        7                13                4

Non-GAAP net income from continuing operations attributable to Merck & Co., Inc.

                                                   $ 

19,005 $ 13,623 $ 7,545 EPS assuming dilution from continuing operations as reported under GAAP

$   5.71          $   4.86          $  1.78
EPS difference                                                          1.77              0.51             1.19
Non-GAAP EPS assuming dilution from continuing operations           $   

7.48 $ 5.37 $ 2.97

(1)Amounts in 2022, 2021 and 2020 include $1.7 billion, $302 million and $1.7 billion, respectively, of intangible asset impairment charges.

(2) The estimated tax impact on the excluded items is determined by applying the statutory rate of the originating territory of the non-GAAP adjustments.

Acquisition and Divestiture-Related Costs



Non-GAAP income and non-GAAP EPS exclude the impact of certain amounts recorded
in connection with acquisitions and divestitures of businesses. These amounts
include the amortization of intangible assets and amortization of purchase
accounting adjustments to inventories, as well as intangible asset impairment
charges, and expense or income related to changes in the estimated fair value
measurement of liabilities for contingent consideration. Also excluded are
integration, transaction, and certain other costs associated with acquisitions
and divestitures of businesses. Non-GAAP income and non-GAAP EPS also exclude
amortization of intangible assets related to collaborations and licensing
arrangements.

Restructuring Costs



Non-GAAP income and non-GAAP EPS exclude costs related to restructuring actions
(see Note 6 to the consolidated financial statements). These amounts include
employee separation costs and accelerated depreciation associated with
facilities to be closed or divested. Accelerated depreciation costs represent
the difference between the depreciation expense to be recognized over the
revised useful life of the asset, based upon the anticipated date the site will
be closed or divested or the equipment disposed of, and depreciation expense as
determined utilizing the useful life prior to the restructuring actions.
Restructuring costs also include asset abandonment, facility shut-down
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and other related costs, as well as employee-related costs such as curtailment, settlement and termination charges associated with pension and other postretirement benefit plans and share-based compensation costs.

Income and Losses from Investments in Equity Securities

Non-GAAP income and non-GAAP EPS exclude realized and unrealized gains and losses from investments in equity securities either owned directly or through ownership interests in investment funds.

Certain Other Items



Non-GAAP income and non-GAAP EPS exclude certain other items. These items are
adjusted for after evaluating them on an individual basis, considering their
quantitative and qualitative aspects. Typically, these consist of items that are
unusual in nature, significant to the results of a particular period or not
indicative of future operating results. Excluded from non-GAAP income and
non-GAAP EPS are charges related to the discontinuation of COVID-19 development
programs (see Note 4 to the consolidated financial statements), as well as a net
tax benefit related to the settlement of certain federal income tax matters (see
Note 16 to the consolidated financial statements), and an adjustment to tax
benefits recorded in conjunction with the 2015 acquisition of Cubist
Pharmaceuticals, Inc.

Research and Development

Research Pipeline

The Company currently has several candidates under regulatory review in the U.S.
and internationally, as well as in late-stage clinical development. A chart
reflecting the Company's current research pipeline as of February 17, 2023 and
related discussion is set forth in Item 1. "Business - Research and Development"
above.

Acquisitions, Research Collaborations and Licensing Agreements

Merck continues to remain focused on pursuing opportunities that have the
potential to drive both near- and long-term growth. Certain recent transactions
are summarized below; additional details are included in Note 4 to the
consolidated financial statements. Merck actively monitors the landscape for
growth opportunities that meet the Company's strategic criteria.

In February 2023, Merck and Kelun-Biotech closed a license and collaboration
agreement expanding their relationship in which Merck gained exclusive rights
for the research, development, manufacture and commercialization of up to seven
investigational preclinical ADCs for the treatment of cancer. Kelun-Biotech
retained the right to research, develop, manufacture and commercialize certain
licensed and option ADCs for Chinese mainland, Hong Kong and Macau. Merck will
make an upfront payment of $175 million, which will be recorded in Research and
development expenses in 2023. In addition, Kelun-Biotech is eligible to receive
future contingent milestone payments and tiered royalties on future net sales
for any commercialized ADC product. Also, in connection with the agreement,
Merck invested $100 million in Kelun-Biotech's Series B preferred shares in
January 2023.

In January 2023, Merck acquired Imago, a clinical stage biopharmaceutical
company developing new medicines for the treatment of myeloproliferative
neoplasms and other bone marrow diseases, for $1.35 billion (including payments
to settle share-based equity awards) and also incurred approximately $60 million
of transaction costs. Imago's lead candidate bomedemstat, MK-3543 (formerly
IMG-7289), is an investigational orally available lysine-specific demethylase 1
inhibitor currently being evaluated in multiple Phase 2 clinical trials for the
treatment of essential thrombocythemia, myelofibrosis, and polycythemia vera, in
addition to other indications. The transaction was accounted for as an
acquisition of an asset. Merck will record net assets of approximately $200
million and Research and development expenses of $1.2 billion in 2023 related to
the transaction. There are no future contingent payments associated with the
acquisition.

In September 2022, Merck exercised its option to jointly develop and
commercialize personalized therapeutic cancer vaccine mRNA-4157/V940 pursuant to
the terms of an existing collaboration and license agreement with Moderna, which
resulted in a $250 million charge to Research and development expenses in 2022.
mRNA-4157/V940 is currently being evaluated in combination with Keytruda as
adjuvant treatment for patients with stage III/IV melanoma following complete
resection in a Phase 2 clinical trial being conducted by Moderna. Merck and
Moderna will collaborate on development and commercialization and will share
costs and any profits equally under this worldwide collaboration. In February
2023, Merck and Moderna announced that mRNA-4157/V940 was granted Breakthrough
Therapy Designation by the FDA for the adjuvant treatment of patients with
high-risk melanoma following complete resection.

In August 2022, Merck and Orna entered into a collaboration agreement to
discover, develop, and commercialize multiple programs, including vaccines and
therapeutics in the areas of infectious disease and oncology. Under the terms of
the agreement, Merck made an upfront payment to Orna of $150 million, which was
recorded in Research and development expenses in 2022. In addition, Orna is
eligible to receive future contingent
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development-related payments, as well as royalties on any approved products derived from the collaboration. Merck also invested $100 million in Orna's Series B preferred shares in 2022.



In July 2022, Merck and Orion announced a global co-development and
co-commercialization agreement for Orion's investigational candidate ODM-208
(MK-5684) and other drugs targeting cytochrome P450 11A1 (CYP11A1), an enzyme
important in steroid production. MK-5684 is an oral, non-steroidal inhibitor of
CYP11A1 currently being evaluated in a Phase 2 clinical trial for the treatment
of patients with mCRPC. Merck made an upfront payment to Orion of $290 million,
which was recorded in Research and development expenses in 2022.

Also in July 2022, Merck and Kelun-Biotech closed a license and collaboration
agreement in which Merck gained exclusive worldwide rights for the development,
manufacture and commercialization of an investigational ADC (MK-1200) for the
treatment of solid tumors. Under the terms of the agreement, Merck and
Kelun-Biotech will collaborate on the early clinical development of the
investigational ADC. Merck made an upfront payment of $35 million, which was
recorded in Research and development expenses in 2022. Kelun-Biotech is also
eligible to receive future contingent milestone payments, as well as tiered
royalties on future net sales.

In May 2022, in connection with an existing arrangement, Merck exercised its
option to obtain an exclusive license outside of Chinese mainland, Hong Kong,
Macau and Taiwan for the development, manufacture and commercialization of
Kelun-Biotech's TROP2-targeting ADC programs, including its lead compound,
SKB-264 (MK-2870), which is currently in Phase 2 clinical development. Under the
terms of the agreement, Merck and Kelun-Biotech will collaborate on certain
early clinical development plans, including evaluating the potential of MK-2870
as a monotherapy and in combination with Keytruda for advanced solid tumors.
Upon option exercise, Merck made a payment of $30 million, which was recorded in
Research and development expenses in 2022, and agreed to make additional
payments upon completion of specified project activities, technology transfer,
as well as payments to fund Kelun-Biotech's ongoing research and development
activities. In addition, Kelun-Biotech is eligible to receive future contingent
developmental and sales-based milestone payments and royalties on future net
sales.

Acquired In-Process Research and Development



In connection with business combinations, the Company has recorded the fair
value of in-process research projects which, at the time of acquisition, had not
yet reached technological feasibility. At December 31, 2022, the balance of
IPR&D was $7.7 billion, primarily consisting of MK-7962 (sotatercept), $6.4
billion; MK-7264 (gefapixant), $832 million; and MK-1026 (nemtabrutinib), $418
million. Sotatercept is in Phase 3 clinical development and the Company
anticipates filing sotatercept with regulatory authorities in 2023. Gefapixant
is under review in the U.S. and the EU. Nemtabrutinib is in Phase 2 clinical
development.

The IPR&D projects that remain in development are subject to the inherent risks
and uncertainties in drug development and it is possible that the Company will
not be able to successfully develop and complete the IPR&D programs and
profitably commercialize the underlying product candidates. The time periods to
receive approvals from the FDA and other regulatory agencies are subject to
uncertainty. Significant delays in the approval process, or the Company's
failure to obtain approval at all, would delay or prevent the Company from
realizing revenues from these products. Additionally, if the IPR&D programs
require additional clinical trial data than previously anticipated, or if the
programs fail or are abandoned during development, then the Company will not
recover the fair value of the IPR&D recorded as an asset as of the acquisition
date. If such circumstances were to occur, the Company's future operating
results could be adversely affected and the Company may recognize impairment
charges, which could be material.

In 2022, 2021, and 2020 the Company recorded IPR&D impairment charges within
Research and development expenses of $1.6 billion, $275 million and $90 million,
respectively (see Note 9 to the consolidated financial statements).

Additional research and development will be required before any of the remaining
programs reach technological feasibility. The costs to complete the research
projects will depend on whether the projects are brought to their final stages
of development and are ultimately submitted to the FDA or other regulatory
agencies for approval.

Capital Expenditures



Capital expenditures were $4.4 billion in 2022, $4.4 billion in 2021 and $4.4
billion in 2020. Expenditures in the U.S. were $2.7 billion in 2022, $2.8
billion in 2021 and $2.6 billion in 2020. The Company plans to invest
approximately $20 billion in capital projects from 2021-2025, approximately half
of which relates to investments in the U.S., including expanding manufacturing
capacity for oncology, vaccine and animal health products.

Depreciation expense was $1.8 billion in 2022, $1.6 billion in 2021 and $1.7
billion in 2020, of which $1.3 billion in 2022, $1.1 billion in 2021 and $1.2
billion in 2020, related to locations in the U.S. Total depreciation expense in
2022, 2021 and 2020 included accelerated depreciation of $120 million, $91
million and $268 million, respectively, associated with restructuring activities
(see Note 6 to the consolidated financial statements).
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Analysis of Liquidity and Capital Resources

Merck's strong financial profile enables it to fund research and development,
focus on external alliances, support in-line products and maximize upcoming
launches while providing significant cash returns to shareholders.
Selected Data
($ in millions)                                       2022                2021                2020
Working capital                                   $   11,483          $    6,394          $      437
Total debt to total liabilities and equity              28.1  %             31.3  %             34.7  %
Cash provided by operating activities of
continuing operations to total debt                       0.6:1               0.4:1               0.2:1


The increase in working capital in 2022 compared with 2021 is primarily due to
increased cash and investments reflecting strong operating performance. The
increase in working capital in 2021 compared with 2020 is primarily related to
decreased short-term debt.

Cash provided by operating activities of continuing operations was $19.1 billion
in 2022 compared with $13.1 billion in 2021. The increase in cash provided by
operating activities of continuing operations reflects stronger operating
performance. Cash provided by operating activities of continuing operations was
reduced by milestone and option payments related to certain collaborations of
$2.0 billion in 2022 and $435 million in 2021. Cash provided by operating
activities of continuing operations continues to be the Company's primary source
of funds to finance operating needs, with excess cash serving as the primary
source of funds to finance business development transactions, capital
expenditures, dividends paid to shareholders and treasury stock purchases. The
mandatory change in R&D capitalization rules that became effective for tax years
beginning after December 31, 2021 (related to the Tax Cuts and Jobs Act of 2017
(TCJA)), increased the amount of taxes the Company pays in the U.S. beginning in
2022.

Cash used in investing activities of continuing operations was $5.0 billion in
2022 compared with $16.4 billion in 2021. The lower use of cash in investing
activities of continuing operations was primarily due to lower cash used for
acquisitions, partially offset by higher purchases of securities and other
investments coupled with lower proceeds from sales of securities and other
investments.

Cash used in financing activities of continuing operations was $9.1 billion in
2022 compared with cash provided by financing activities of continuing
operations of $3.1 billion in 2021. The change was primarily driven by the cash
distribution received in 2021 from Organon in connection with the spin-off (see
Note 3 to the consolidated financial statements), proceeds from the issuance of
debt in 2021 compared with no such proceeds in 2022, and higher dividends paid
to stockholders in 2022, partially offset by net repayments of short-term
borrowings and treasury stock purchases in 2021 that did not occur in 2022.

In December 2021, the Company issued $8.0 billion principal amount of senior
unsecured notes consisting of $1.5 billion of 1.70% notes due 2027, $1.0 billion
of 1.90% notes due 2028, $2.0 billion of 2.15% notes due 2031, $2.0 billion of
2.75% notes due 2051 and $1.5 billion of 2.90% notes due 2061. Merck used the
net proceeds from the offering of the 2027 notes, the 2031 notes, the 2051 notes
and the 2061 notes for general corporate purposes, including the repayment of
outstanding commercial paper borrowings (including commercial paper borrowings
in connection with Merck's acquisition of Acceleron), and other indebtedness.
Merck has committed to allocate an amount equal to the net proceeds of the
offering of the notes due in 2028 to finance or refinance, in whole or in part,
projects and partnerships in the Company's priority environmental, social and
governance (ESG) areas.

In June 2020, the Company issued $4.5 billion principal amount of senior
unsecured notes consisting of $1.0 billion of 0.75% notes due 2026,
$1.25 billion of 1.45% notes due 2030, $1.0 billion of 2.35% notes due 2040 and
$1.25 billion of 2.45% notes due 2050. Merck used the net proceeds from the
offering for general corporate purposes, including the repayment of outstanding
commercial paper borrowings and other indebtedness.

In 2022, the Company's $1.25 billion, 2.35% notes and the Company's
$1.0 billion, 2.40% notes matured in accordance with their terms and were
repaid. In 2021, the Company's $1.15 billion, 3.875% notes and the Company's
€1.0 billion, 1.125% notes matured in accordance with their terms and were
repaid. In 2020, the Company's $1.25 billion, 1.85% notes and $700 million
floating-rate notes matured in accordance with their terms and were repaid.

The Company has a $6.0 billion credit facility that matures in June 2026. The
facility provides backup liquidity for the Company's commercial paper borrowing
facility and is to be used for general corporate purposes. The Company has not
drawn funding from this facility.
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The Company expects foreseeable liquidity and capital resource requirements to
be met through existing cash and cash equivalents and anticipated cash flows
from operations, as well as commercial paper borrowings and long-term borrowings
if needed. Merck believes that its sources of financing will be adequate to meet
its future requirements. The Company's material cash requirements arising in the
normal course of business primarily include:

Debt Obligations and Interest Payments - See Note 10 to the consolidated financial statements for further detail of the Company's debt obligations and the timing of expected future principal and interest payments.



Tax Liabilities - In connection with the enactment of the TCJA, the Company is
required to pay a one-time transition tax, which the Company has elected to pay
over a period of eight years through 2025 as permitted under the TCJA.
Additionally, the Company has liabilities for unrecognized tax benefits,
including interest and penalties. See Note 16 to the consolidated financial
statements for further information pertaining to the transition tax and
liabilities for unrecognized tax benefits.

Operating Leases - See Note 10 to consolidated financial statements for further
details of the Company's lease obligations and the timing of expected future
lease payments.

Contingent Milestone Payments - The Company has an accrued liability for a
contingent sales-based milestone payment related to a collaboration with
AstraZeneca where payment has been deemed probable by the Company but remains
subject to the achievement of the related sales-based milestone. See Note 5 to
the consolidated financial statements for additional information related to this
sales-based milestone.

Purchase Obligations - Purchase obligations are enforceable and legally binding
obligations for purchases of goods and services including minimum inventory
contracts, research and development and advertising. Purchase obligations also
include future inventory purchases the Company has committed to in connection
with certain divestitures. As of December 31, 2022, the Company had total
purchase obligations of $6.0 billion, of which $1.7 billion is estimated to be
payable in 2023.

In March 2021, the Company filed a securities registration statement with the U.S. Securities and Exchange Commission (SEC) under the automatic shelf registration process available to "well-known seasoned issuers" which is effective for three years.



Effective as of November 3, 2009, the Company executed a full and unconditional
guarantee of the then existing debt of its subsidiary Merck Sharp & Dohme Corp.
(MSD) and MSD executed a full and unconditional guarantee of the then existing
debt of the Company (excluding commercial paper), including for payments of
principal and interest. These guarantees do not extend to debt issued subsequent
to that date.

The Company believes it maintains a conservative financial profile. The Company
places its cash and investments in instruments that meet high credit quality
standards, as specified in its investment policy guidelines. These guidelines
also limit the amount of credit exposure to any one issuer. The Company does not
participate in any off-balance sheet arrangements involving unconsolidated
subsidiaries that provide financing or potentially expose the Company to
unrecorded financial obligations.

In November 2022, Merck's Board of Directors increased the quarterly dividend,
declaring a quarterly dividend of $0.73 per share on the Company's outstanding
common stock for the first quarter of 2023 that was paid in January 2023. In
January 2023, the Board of Directors declared a quarterly dividend of $0.73 per
share on the Company's outstanding common stock for the second quarter of 2023
payable in April 2023.

In October 2018, Merck's Board of Directors authorized purchases of up to $10
billion of Merck's common stock for its treasury. The treasury stock purchase
authorization has no time limit and will be made over time in open-market
transactions, block transactions, on or off an exchange, or in privately
negotiated transactions. The Company did not purchase any shares of its common
stock for its treasury during 2022 under this program. As of December 31, 2022,
the Company's remaining share repurchase authorization was $5.0 billion. The
Company anticipates making modest share repurchases under this program in 2023.
The Company purchased $840 million and $1.3 billion of its common stock during
2021 and 2020, respectively, under authorized share repurchase programs.

Financial Instruments Market Risk Disclosures



The Company manages the impact of foreign exchange rate movements and interest
rate movements on its earnings, cash flows and fair values of assets and
liabilities through operational means and through the use of various financial
instruments, including derivative instruments.

A significant portion of the Company's revenues and earnings in foreign
affiliates is exposed to changes in foreign exchange rates. The objectives of
and accounting related to the Company's foreign currency risk management
program, as well as its interest rate risk management activities are discussed
below.
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Foreign Currency Risk Management



The Company has established revenue hedging, balance sheet risk management, and
net investment hedging programs to protect against volatility of future foreign
currency cash flows and changes in fair value caused by changes in foreign
exchange rates.

The objective of the revenue hedging program is to reduce the variability caused
by changes in foreign exchange rates that would affect the U.S. dollar value of
future cash flows derived from foreign currency denominated sales, primarily the
euro, Japanese yen and Chinese renminbi. To achieve this objective, the Company
will hedge a portion of its forecasted foreign currency denominated third-party
and intercompany distributor entity sales (forecasted sales) that are expected
to occur over its planning cycle, typically no more than two years into the
future. The Company will layer in hedges over time, increasing the portion of
forecasted sales hedged as it gets closer to the expected date of the forecasted
sales. The portion of forecasted sales hedged is based on assessments of
cost-benefit profiles that consider natural offsetting exposures, revenue and
exchange rate volatilities and correlations, and the cost of hedging
instruments. The Company manages its anticipated transaction exposure
principally with purchased local currency put options, forward contracts, and
purchased collar options.

The fair values of these derivative contracts are recorded as either assets
(gain positions) or liabilities (loss positions) in the Consolidated Balance
Sheet. Changes in the fair value of derivative contracts are recorded each
period in either current earnings or Other Comprehensive Income (Loss) (OCI),
depending on whether the derivative is designated as part of a hedge transaction
and, if so, the type of hedge transaction. For derivatives that are designated
as cash flow hedges, the unrealized gains or losses on these contracts are
recorded in Accumulated Other Comprehensive Loss (AOCL) and reclassified into
Sales when the hedged anticipated revenue is recognized. For those derivatives
which are not designated as cash flow hedges, but serve as economic hedges of
forecasted sales, unrealized gains or losses are recorded in Sales each period.
The cash flows from both designated and non-designated contracts are reported as
operating activities in the Consolidated Statement of Cash Flows. The Company
does not enter into derivatives for trading or speculative purposes.

Because Merck principally sells foreign currency in its revenue hedging program,
a uniform weakening of the U.S. dollar would yield the largest overall potential
loss in the market value of these hedge instruments. The market value of Merck's
hedges would have declined by an estimated $647 million and $648 million at
December 31, 2022 and 2021, respectively, from a uniform 10% weakening of the
U.S. dollar. The market value was determined using a foreign exchange option
pricing model and holding all factors except exchange rates constant. Although
not predictive in nature, the Company believes that a 10% threshold reflects
reasonably possible near-term changes in Merck's major foreign currency
exposures relative to the U.S. dollar.

The Company manages operating activities and net asset positions at each local
subsidiary in order to mitigate the effects of exchange on monetary assets and
liabilities. Monetary assets and liabilities denominated in a currency other
than the functional currency of a given subsidiary are remeasured at spot rates
in effect on the balance sheet date with the effects of changes in spot rates
reported in Other (income) expense, net. The Company also uses a balance sheet
risk management program to mitigate the exposure of such assets and liabilities
from the effects of volatility in foreign exchange. Merck principally utilizes
forward exchange contracts to offset the effects of exchange in developed
country currencies, primarily the euro, Japanese yen, British pound, Canadian
dollar, Australian dollar and Swiss franc. For exposures in developing country
currencies, including the Chinese renminbi, the Company will enter into forward
contracts to offset the effects of exchange on exposures when it is deemed
economical to do so based on a cost-benefit analysis that considers the
magnitude of the exposure, the volatility of the exchange rate and the cost of
the hedging instrument. The forward contracts are not designated as hedges and
are marked to market through Other (income) expense, net. Accordingly, fair
value changes in the forward contracts help mitigate the changes in the value of
the remeasured assets and liabilities attributable to changes in foreign
currency exchange rates, except to the extent of the spot-forward differences.
These differences are not significant due to the short-term nature of the
contracts, which typically have average maturities at inception of less than six
months. The cash flows from these contracts are reported as operating activities
in the Consolidated Statement of Cash Flows.

A sensitivity analysis to changes in the value of the U.S. dollar on foreign
currency denominated derivatives, investments and monetary assets and
liabilities indicated that if the U.S. dollar uniformly weakened by 10% against
all currency exposures of the Company at December 31, 2022 and 2021, Income from
Continuing Operations Before Taxes would have declined by approximately $190
million and $125 million in 2022 and 2021, respectively. Because the Company was
in a net short (payable) position relative to its major foreign currencies after
consideration of forward contracts, a uniform weakening of the U.S. dollar will
yield the largest overall potential net loss in earnings due to exchange. This
measurement assumes that a change in one foreign currency relative to the
U.S. dollar would not affect other foreign currencies relative to the
U.S. dollar. Although not predictive in nature, the Company believes that a 10%
threshold reflects reasonably possible near-term changes in Merck's major
foreign
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currency exposures relative to the U.S. dollar. The cash flows from these contracts are reported as operating activities in the Consolidated Statement of Cash Flows.



The economy of Türkiye was determined to be hyperinflationary in 2022.
Consequently, in accordance with U.S. GAAP, the Company began remeasuring the
monetary assets and liabilities of those operations in earnings beginning in the
second quarter of 2022. The impact to the Company's results is immaterial.

The Company also uses forward exchange contracts to hedge a portion of its net
investment in foreign operations against movements in exchange rates. The
forward contracts are designated as hedges of the net investment in a foreign
operation. The unrealized gains or losses on these contracts are recorded in
foreign currency translation adjustment within OCI, and remain in AOCL until
either the sale or complete or substantially complete liquidation of the
subsidiary. The Company excludes certain portions of the change in fair value of
its derivative instruments from the assessment of hedge effectiveness (excluded
components). Changes in fair value of the excluded components are recognized in
OCI. The Company recognizes in earnings the initial value of the excluded
components on a straight-line basis over the life of the derivative instrument,
rather than using the mark-to-market approach. The cash flows from these
contracts are reported as investing activities in the Consolidated Statement of
Cash Flows.

Foreign exchange risk is also managed through the use of foreign currency debt.
The Company's senior unsecured euro-denominated notes have been designated as,
and are effective as, economic hedges of the net investment in a foreign
operation. Accordingly, foreign currency transaction gains or losses due to spot
rate fluctuations on the euro-denominated debt instruments are included in
foreign currency translation adjustment within OCI.

Interest Rate Risk Management



The Company may use interest rate swap contracts on certain investing and
borrowing transactions to manage its net exposure to interest rate changes and
to reduce its overall cost of borrowing. The Company does not use leveraged
swaps and, in general, does not leverage any of its investment activities that
would put principal at risk. The Company is not currently a party to any
interest rate swaps.

The Company's investment portfolio includes cash equivalents and short-term
investments, the market values of which are not significantly affected by
changes in interest rates. The market value of the Company's medium- to
long-term fixed-rate investments is modestly affected by changes in
U.S. interest rates. Changes in medium- to long-term U.S. interest rates have a
more significant impact on the market value of the Company's fixed-rate
borrowings, which generally have longer maturities. A sensitivity analysis to
measure potential changes in the market value of Merck's investments and debt
from a change in interest rates indicated that a one percentage point increase
in interest rates at December 31, 2022 and 2021 would have positively affected
the net aggregate market value of these instruments by $2.0 billion and $3.2
billion, respectively. A one percentage point decrease at December 31, 2022 and
2021 would have negatively affected the net aggregate market value by $2.4
billion and $3.9 billion, respectively. The fair value of Merck's debt was
determined using pricing models reflecting one percentage point shifts in the
appropriate yield curves. The fair values of Merck's investments were determined
using a combination of pricing and duration models.

Critical Accounting Estimates



The Company's consolidated financial statements are prepared in conformity with
GAAP and, accordingly, include certain amounts that are based on management's
best estimates and judgments. Estimates are used when accounting for amounts
recorded in connection with acquisitions, including initial fair value
determinations of assets and liabilities in a business combination (primarily
IPR&D, other intangible assets and contingent consideration), as well as
subsequent fair value measurements. Additionally, estimates are used in
determining such items as provisions for sales discounts and returns,
depreciable and amortizable lives, recoverability of inventories, including
those produced in preparation for product launches, amounts recorded for
contingencies, environmental liabilities, accruals for contingent sales-based
milestone payments and other reserves, pension and other postretirement benefit
plan assumptions, share-based compensation assumptions, restructuring costs,
impairments of long-lived assets (including intangible assets and goodwill) and
investments, and taxes on income. Because of the uncertainty inherent in such
estimates, actual results may differ from these estimates. Application of the
following accounting policies result in accounting estimates having the
potential for the most significant impact on the financial statements.

Acquisitions and Dispositions



To determine whether transactions should be accounted for as acquisitions (or
disposals) of assets or businesses, the Company makes certain judgments, which
include assessment of the inputs, processes, and outputs associated with the
acquired set of activities. If the Company determines that substantially all of
the fair value of gross
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assets included in a transaction is concentrated in a single asset (or a group
of similar assets), the assets would not represent a business. To be considered
a business, the assets in a transaction need to include an input and a
substantive process that together significantly contribute to the ability to
create outputs.

In a business combination, the acquisition method of accounting requires that
the assets acquired and liabilities assumed be recorded as of the date of the
acquisition at their respective fair values with limited exceptions. The fair
values of intangible assets are determined utilizing information available near
the acquisition date based on expectations and assumptions that are deemed
reasonable by management. Given the considerable judgment involved in
determining fair values, the Company typically obtains assistance from
third-party valuation specialists for significant items. Assets acquired and
liabilities assumed in a business combination that arise from contingencies are
generally recognized at fair value. If fair value cannot be determined, the
asset or liability is recognized if probable and reasonably estimable; if these
criteria are not met, no asset or liability is recognized. Fair value is defined
as the exchange price that would be received for an asset or paid to transfer a
liability (an exit price) in the principal or most advantageous market for the
asset or liability in an orderly transaction between market participants on the
measurement date. Accordingly, the Company may be required to value assets at
fair value measures that do not reflect the Company's intended use of those
assets. Any excess of the purchase price (consideration transferred) over the
estimated fair values of net assets acquired is recorded as goodwill.
Transaction costs and costs to restructure the acquired company are expensed as
incurred. The operating results of the acquired business are reflected in the
Company's consolidated financial statements after the date of the acquisition.

The judgments made in determining estimated fair values assigned to assets acquired and liabilities assumed in a business combination, as well as asset lives, can materially affect the Company's results of operations.



The fair values of identifiable intangible assets related to currently marketed
products and product rights are primarily determined by using an income approach
through which fair value is estimated based on each asset's discounted projected
net cash flows. The Company's estimates of market participant net cash flows
consider historical and projected pricing, margins and expense levels; the
performance of competing products where applicable; relevant industry and
therapeutic area growth drivers and factors; current and expected trends in
technology and product life cycles; the time and investment that will be
required to develop products and technologies; the ability to obtain additional
marketing and regulatory approvals; the ability to manufacture and commercialize
the products; the extent and timing of potential new product introductions by
the Company's competitors; and the life of each asset's underlying patent and
related patent term extension, if any. The net cash flows are then
probability-adjusted where appropriate to consider the uncertainties associated
with the underlying assumptions, as well as the risk profile of the net cash
flows utilized in the valuation. The probability-adjusted future net cash flows
of each product are then discounted to present value utilizing an appropriate
discount rate.

The fair values of identifiable intangible assets related to IPR&D are also
determined using an income approach, through which fair value is estimated based
on each asset's probability-adjusted future net cash flows, which reflect the
different stages of development of each product and the associated probability
of successful completion. The net cash flows are then discounted to present
value using an appropriate discount rate. Amounts allocated to acquired IPR&D
are capitalized and accounted for as indefinite-lived intangible assets, subject
to impairment testing until completion or abandonment of the projects. Upon
successful completion of each IPR&D project, Merck will make a determination as
to the then-useful life of the intangible asset, generally determined by the
period in which the substantial majority of the cash flows are expected to be
generated, and begin amortization.

Certain of the Company's business combinations involve the potential for future
payment of consideration that is contingent upon the achievement of performance
milestones, including product development milestones and royalty payments on
future product sales. The fair value of contingent consideration liabilities is
determined at the acquisition date using unobservable inputs. These inputs
include the estimated amount and timing of projected cash flows, the probability
of success (achievement of the contingent event) and the risk-adjusted discount
rate used to present value the probability-weighted cash flows. Subsequent to
the acquisition date, at each reporting period until the contingency is
resolved, the contingent consideration liability is remeasured at current fair
value with changes (either expense or income) recorded in earnings. Changes in
any of the inputs may result in a significantly different fair value adjustment.

If the Company determines the transaction will not be accounted for as an
acquisition of a business, the transaction will be accounted for as an asset
acquisition rather than a business combination and, therefore, no goodwill will
be recorded. In an asset acquisition, acquired IPR&D with no alternative future
use is charged to expense and contingent consideration is not recognized at the
acquisition date.


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Contingent Sales-Based Milestones



The terms of certain collaborative arrangements require the Company to make
payments contingent upon the achievement of sales-based milestones. Sales-based
milestones payable by Merck to collaborative partners are accrued and
capitalized, subject to cumulative amortization catch-up, when determined to be
probable of being achieved by the Company based on future sales forecasts. The
amortization catch-up is calculated either from the time of the first regulatory
approval for indications that were unapproved at the time the collaboration was
formed, or from time of the formation of the collaboration for approved
products. The related intangible asset that is recognized is amortized over its
remaining useful life, subject to impairment testing.

Revenue Recognition



Recognition of revenue requires evidence of a contract, probable collection of
sales proceeds and completion of substantially all performance obligations.
Merck acts as the principal in substantially all of its customer arrangements
and therefore records revenue on a gross basis. The majority of the Company's
contracts related to the Pharmaceutical and Animal Health segments have a single
performance obligation - the promise to transfer goods. Shipping is considered
immaterial in the context of the overall customer arrangement and damages or
loss of goods in transit are rare. Therefore, shipping is not deemed a
separately recognized performance obligation.

The vast majority of revenues from sales of products are recognized at a point
in time when control of the goods is transferred to the customer, which the
Company has determined is when title and risks and rewards of ownership transfer
to the customer and the Company is entitled to payment. For certain services in
the Animal Health segment, revenue is recognized over time, generally ratably
over the contract term as services are provided. These service revenues are not
material.

The nature of the Company's business gives rise to several types of variable
consideration including discounts and returns, which are estimated at the time
of sale generally using the expected value method, although the most likely
amount method is used for prompt pay discounts.

In the U.S., sales discounts are issued to customers at the point-of-sale,
through an intermediary wholesaler (known as chargebacks), or in the form of
rebates. Additionally, sales are generally made with a limited right of return
under certain conditions. Revenues are recorded net of provisions for sales
discounts and returns, which are established at the time of sale. In addition,
if collection of accounts receivable is expected to be in excess of one year,
sales are recorded net of time value of money discounts, which have not been
material.

The U.S. provision for aggregate customer discounts covers chargebacks and
rebates. Chargebacks are discounts that occur when a contracted customer
purchases through an intermediary wholesaler. The contracted customer generally
purchases product from the wholesaler at its contracted price plus a mark-up.
The wholesaler, in turn, charges the Company back for the difference between the
price initially paid by the wholesaler and the contract price paid to the
wholesaler by the customer. The provision for chargebacks is based on expected
sell-through levels by the Company's wholesale customers to contracted
customers, as well as estimated wholesaler inventory levels. Rebates are amounts
owed based upon definitive contractual agreements or legal requirements with
private sector and public sector (Medicaid and Medicare Part D) benefit
providers after the final dispensing of the product to a benefit plan
participant. The provision for rebates is based on expected patient usage, as
well as inventory levels in the distribution channel to determine the
contractual obligation to the benefit providers. The Company uses historical
customer segment utilization mix, sales forecasts, changes to product mix and
price, inventory levels in the distribution channel, government pricing
calculations and prior payment history in order to estimate the expected
provision. Amounts accrued for aggregate customer discounts are evaluated on a
quarterly basis through comparison of information provided by the wholesalers,
health maintenance organizations, pharmacy benefit managers, federal and state
agencies, and other customers to the amounts accrued. Merck remains committed to
the 340B Program and to providing 340B discounts to eligible covered entities.
See Note 11 to the consolidated financial statements for information regarding
340B legal proceedings.

The Company continually monitors its provision for aggregate customer discounts.
There were no material adjustments to estimates associated with the aggregate
customer discount provision in 2022, 2021 or 2020.


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Summarized information about changes in the aggregate customer discount accrual related to U.S. sales is as follows:



($ in millions)                   2022          2021
Balance January 1              $  2,844      $  2,776
Current provision                12,408        12,412
Adjustments to prior years         (155)         (110)
Payments                        (12,179)      (12,234)
Balance December 31            $  2,918      $  2,844


Accruals for chargebacks are reflected as a direct reduction to accounts
receivable and accruals for rebates as current liabilities. The accrued balances
relative to these provisions included in Accounts receivable and Accrued and
other current liabilities were $178 million and $2.7 billion, respectively, at
December 31, 2022 and were $207 million and $2.6 billion, respectively, at
December 31, 2021.

Outside of the U.S., variable consideration in the form of discounts and rebates
are a combination of commercially-driven discounts in highly competitive product
classes, discounts required to gain or maintain reimbursement, or legislatively
mandated rebates. In certain European countries, legislatively mandated rebates
are calculated based on an estimate of the government's total unbudgeted
spending and the Company's specific payback obligation. Rebates may also be
required based on specific product sales thresholds. The Company applies an
estimated factor against its actual invoiced sales to represent the expected
level of future discount or rebate obligations associated with the sale.

The Company maintains a returns policy that allows its U.S. pharmaceutical
customers to return product within a specified period prior to and subsequent to
the expiration date (generally, three to six months before and 12 months after
product expiration). The estimate of the provision for returns is based upon
historical experience with actual returns. Additionally, the Company considers
factors such as levels of inventory in the distribution channel, product dating
and expiration period, whether products have been discontinued, entrance in the
market of generic or other competition, changes in formularies or launch of
over-the-counter products, among others. The product returns provision for U.S.
pharmaceutical sales as a percentage of U.S. net pharmaceutical sales was 1.1%
in 2022, 0.9% in 2021 and 0.5% in 2020. Outside of the U.S., returns are only
allowed in certain countries on a limited basis.

Merck's payment terms for U.S. pharmaceutical customers are typically 36 days
from receipt of invoice and for U.S. animal health customers are typically 30
days from receipt of invoice; however, certain products, including Keytruda,
have longer payment terms, some of which are up to 90 days. Outside of the U.S.,
payment terms are typically 30 days to 90 days, although certain markets have
longer payment terms.

Through its distribution programs with U.S. wholesalers, the Company encourages
wholesalers to align purchases with underlying demand and maintain inventories
below specified levels. The terms of the programs allow the wholesalers to earn
fees upon providing visibility into their inventory levels, as well as by
achieving certain performance parameters such as inventory management, customer
service levels, reducing shortage claims and reducing product returns.
Information provided through the wholesaler distribution programs includes items
such as sales trends, inventory on-hand, on-order quantity and product returns.

Inventories Produced in Preparation for Product Launches



The Company capitalizes inventories produced in preparation for product launches
sufficient to support estimated initial market demand. Typically, capitalization
of such inventory does not begin until the related product candidates are in
Phase 3 clinical trials and regulatory approval is considered by the Company to
be probable. The Company monitors the status of each respective product within
the regulatory approval process; however, the Company generally does not
disclose specific timing for regulatory approval. If the Company is aware of any
specific risks or contingencies other than the normal regulatory approval
process or if there are any specific issues identified during the research
process relating to safety, efficacy, manufacturing, marketing or labeling, the
related inventory would generally not be capitalized. Expiry dates of the
inventory are affected by the stage of completion. The Company manages the
levels of inventory at each stage to optimize the shelf life of the inventory in
relation to anticipated market demand in order to avoid product expiry issues.
For inventories that are capitalized, anticipated future sales and shelf lives
support the realization of the inventory value as the inventory shelf life is
sufficient to meet initial product launch requirements. Inventories produced in
preparation for product launches capitalized at December 31, 2022 and 2021 were
$516 million and $256 million, respectively.


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Contingencies and Environmental Liabilities



The Company is involved in various claims and legal proceedings of a nature
considered normal to its business, including product liability, intellectual
property and commercial litigation, as well as certain additional matters
including governmental and environmental matters (see Note 11 to the
consolidated financial statements). The Company records accruals for
contingencies when it is probable that a liability has been incurred and the
amount can be reasonably estimated. These accruals are adjusted periodically as
assessments change or additional information becomes available. For product
liability claims, a portion of the overall accrual is actuarially determined and
considers such factors as past experience, number of claims reported and
estimates of claims incurred but not yet reported. Individually significant
contingent losses are accrued when probable and reasonably estimable.

Legal defense costs expected to be incurred in connection with a loss
contingency are accrued when probable and reasonably estimable. Some of the
significant factors considered in the review of these legal defense reserves are
as follows: the actual costs incurred by the Company; the development of the
Company's legal defense strategy and structure in light of the scope of its
litigation; the number of cases being brought against the Company; the costs and
outcomes of completed trials and the most current information regarding
anticipated timing, progression, and related costs of pre-trial activities and
trials in the associated litigation. The amount of legal defense reserves as of
December 31, 2022 and 2021 of approximately $230 million represents the
Company's best estimate of the minimum amount of defense costs to be incurred in
connection with its outstanding litigation; however, events such as additional
trials and other events that could arise in the course of its litigation could
affect the ultimate amount of legal defense costs to be incurred by the Company.
The Company will continue to monitor its legal defense costs and review the
adequacy of the associated reserves and may determine to increase the reserves
at any time in the future if, based upon the factors set forth, it believes it
would be appropriate to do so.

The Company and its subsidiaries are parties to a number of proceedings brought
under the Comprehensive Environmental Response, Compensation and Liability Act,
commonly known as Superfund, and other federal and state equivalents. When a
legitimate claim for contribution is asserted, a liability is initially accrued
based upon the estimated transaction costs to manage the site. Accruals are
adjusted as site investigations, feasibility studies and related cost
assessments of remedial techniques are completed, and as the extent to which
other potentially responsible parties who may be jointly and severally liable
can be expected to contribute is determined.

The Company is also remediating environmental contamination resulting from past
industrial activity at certain of its sites and takes an active role in
identifying and accruing for these costs. In the past, Merck performed a
worldwide survey to assess all sites for potential contamination resulting from
past industrial activities. Where assessment indicated that physical
investigation was warranted, such investigation was performed, providing a
better evaluation of the need for remedial action. Where such need was
identified, remedial action was then initiated. As definitive information became
available during the course of investigations and/or remedial efforts at each
site, estimates were refined and accruals were established or adjusted
accordingly. These estimates and related accruals continue to be refined
annually.

The Company believes that there are no compliance issues associated with
applicable environmental laws and regulations that would have a material adverse
effect on the Company. Expenditures for remediation and environmental
liabilities were $4 million in 2022 and are estimated to be $23 million in the
aggregate for the years 2023 through 2027. In management's opinion, the
liabilities for all environmental matters that are probable and reasonably
estimable have been accrued and totaled $39 million and $40 million at
December 31, 2022 and 2021, respectively. These liabilities are undiscounted, do
not consider potential recoveries from other parties and will be paid out over
the periods of remediation for the applicable sites, which are expected to occur
primarily over the next 15 years. Although it is not possible to predict with
certainty the outcome of these matters, or the ultimate costs of remediation,
management does not believe that any reasonably possible expenditures that may
be incurred in excess of the liabilities accrued should exceed approximately $35
million in the aggregate. Management also does not believe that these
expenditures should result in a material adverse effect on the Company's
financial condition, results of operations or liquidity for any year.

Share-Based Compensation



The Company expenses all share-based payment awards to employees, including
grants of stock options, over the requisite service period based on the grant
date fair value of the awards. The Company determines the fair value of certain
share-based awards using the Black-Scholes option-pricing model which uses both
historical and current market data to estimate the fair value. This method
incorporates various assumptions such as the risk-free interest rate, expected
volatility, expected dividend yield and expected life of the options. Total
pretax share-based compensation expense from continuing operations was $541
million in 2022, $479 million in 2021 and $441 million in 2020. At December 31,
2022, there was $813 million of total pretax unrecognized compensation expense
related to nonvested stock option, restricted stock unit and performance share
unit awards which will be recognized over a
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weighted-average period of 1.9 years. For segment reporting, share-based compensation costs are unallocated expenses.

Pensions and Other Postretirement Benefit Plans



Net periodic benefit cost for pension plans totaled $554 million in 2022, $748
million in 2021 and $450 million in 2020. Net periodic benefit credit for other
postretirement benefit plans was $93 million in 2022, $83 million in 2021 and
$59 million in 2020. Pension and other postretirement benefit plan information
for financial reporting purposes is calculated using actuarial assumptions
including a discount rate for plan benefit obligations and an expected rate of
return on plan assets. The changes in net periodic benefit cost year over year
for pension plans are primarily attributable to changes in the discount rates.
Additionally, net periodic benefit costs in 2022 and 2021 reflect higher
settlement charges incurred by certain plans compared with 2020.

The Company reassesses its benefit plan assumptions on a regular basis. For both
the pension and other postretirement benefit plans, the discount rate is
evaluated on measurement dates and modified to reflect the prevailing market
rate of a portfolio of high-quality fixed-income debt instruments that would
provide the future cash flows needed to pay the benefits included in the benefit
obligation as they come due. The discount rates for the Company's U.S. pension
and other postretirement benefit plans ranged from 5.50% to 5.90% at
December 31, 2022, compared with a range of 2.60% to 3.10% at December 31, 2021.

The expected rate of return for both the pension and other postretirement
benefit plans represents the average rate of return to be earned on plan assets
over the period the benefits included in the benefit obligation are to be paid.
In developing the expected rate of return, the Company considers long-term
compound annualized returns of historical market data, current market conditions
and actual returns on the Company's plan assets. Using this reference
information, the Company develops forward-looking return expectations for each
asset category and a weighted-average expected long-term rate of return for a
target portfolio allocated across these investment categories. The expected
portfolio performance reflects the contribution of active management as
appropriate. For 2023, the expected rate of return for the Company's U.S.
pension and other postretirement benefit plans will be 7.00% compared to 6.70%
in 2022.

The Company has established investment guidelines for its U.S. pension and other
postretirement plans to create an asset allocation that is expected to deliver a
rate of return sufficient to meet the long-term obligation of each plan, given
an acceptable level of risk. The target investment portfolio of the Company's
U.S. pension and other postretirement benefit plans is allocated 25% to 40% in
U.S. equities, 10% to 20% in international equities, 35% to 45% in fixed-income
investments, and up to 8% in cash and other investments. The portfolio's equity
weighting is consistent with the long-term nature of the plans' benefit
obligations. The expected annual standard deviation of returns of the target
portfolio, which approximates 10%, reflects both the equity allocation and the
diversification benefits among the asset classes in which the portfolio invests.
For international pension plans, the targeted investment portfolio varies based
on the duration of pension liabilities and local government rules and
regulations. Although a significant percentage of plan assets are invested in
U.S. equities, concentration risk is mitigated through the use of strategies
that are diversified within management guidelines.

Actuarial assumptions are based upon management's best estimates and judgment. A
reasonably possible change of plus (minus) 25 basis points in the discount rate
assumption, with other assumptions held constant, would have had an estimated
$81 million favorable (unfavorable) impact on the Company's net periodic benefit
cost in 2022. A reasonably possible change of plus (minus) 25 basis points in
the expected rate of return assumption, with other assumptions held constant,
would have had an estimated $59 million favorable (unfavorable) impact on
Merck's net periodic benefit cost in 2022. Required funding obligations for 2023
relating to the Company's pension and other postretirement benefit plans are not
expected to be material. The preceding hypothetical changes in the discount rate
and expected rate of return assumptions would not impact the Company's funding
requirements.

Net gain/loss amounts, which primarily reflect differences between expected and
actual returns on plan assets as well as the effects of changes in actuarial
assumptions, are recorded as a component of AOCL. Expected returns for pension
plans are based on a calculated market-related value of assets. Net gain/loss
amounts in AOCL in excess of certain thresholds are amortized into net periodic
benefit cost over the average remaining service life of employees.

Restructuring Costs



Restructuring costs have been recorded in connection with restructuring programs
designed to streamline the Company's cost structure. As a result, the Company
has made estimates and judgments regarding its future plans, including future
termination benefits to be incurred in conjunction with involuntary separations
when such separations are probable and estimable. When accruing termination
costs, the Company will recognize the amount within a range of costs that is the
best estimate within the range. When no amount within the range is a better
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estimate than any other amount, the Company recognizes the minimum amount within
the range. In connection with these actions, management also assesses the
recoverability of long-lived assets employed in the business. In certain
instances, asset lives have been shortened based on changes in the expected
useful lives of the affected assets. Severance and other related costs are
reflected within Restructuring costs. Asset-related charges are reflected within
Cost of sales, Selling, general and administrative expenses and Research and
development expenses depending upon the nature of the asset.

Impairments of Long-Lived Assets



The Company assesses changes in economic, regulatory and legal conditions and
makes assumptions regarding estimated future cash flows in evaluating the value
of the Company's property, plant and equipment, goodwill and other intangible
assets.

The Company periodically evaluates whether current facts or circumstances
indicate that the carrying values of its long-lived assets to be held and used
may not be recoverable. If such circumstances are determined to exist, an
estimate of the undiscounted future cash flows of these assets, or appropriate
asset groupings, is compared to the carrying value to determine whether an
impairment exists. If the asset is determined to be impaired, the loss is
measured based on the difference between the asset's fair value and its carrying
value. If quoted market prices are not available, the Company will estimate fair
value using a discounted value of estimated future cash flows approach.

Goodwill represents the excess of the consideration transferred over the fair
value of net assets of businesses acquired. Goodwill is assigned to reporting
units and evaluated for impairment on at least an annual basis, or more
frequently if impairment indicators exist, by first assessing qualitative
factors to determine whether it is more likely than not that the fair value of a
reporting unit is less than its carrying amount. Some of the factors considered
in the assessment include general macroeconomic conditions, conditions specific
to the industry and market, cost factors which could have a significant effect
on earnings or cash flows, the overall financial performance of the reporting
unit, and whether there have been sustained declines in the Company's share
price. If the Company concludes it is more likely than not that the fair value
of a reporting unit is less than its carrying amount, a quantitative fair value
test is performed. If the carrying value of a reporting unit is greater than its
fair value, a goodwill impairment charge will be recorded for the difference (up
to the carrying value of goodwill).

Other acquired intangible assets (excluding IPR&D) are initially recorded at
fair value, assigned an estimated useful life, and amortized primarily on a
straight-line basis over their estimated useful lives. When events or
circumstances warrant a review, the Company will assess recoverability from
future operations using pretax undiscounted cash flows derived from the lowest
appropriate asset groupings. Impairments are recognized in operating results to
the extent that the carrying value of the intangible asset exceeds its fair
value, which is determined based on the net present value of estimated future
cash flows.

IPR&D that the Company acquires in conjunction with the acquisition of a
business represents the fair value assigned to incomplete research projects
which, at the time of acquisition, have not reached technological feasibility.
The amounts are capitalized and accounted for as indefinite-lived intangible
assets, subject to impairment testing until completion or abandonment of the
projects. The Company evaluates IPR&D for impairment at least annually, or more
frequently if impairment indicators exist (such as unfavorable clinical trial
data, changes in the commercial landscape or delays in the clinical development
program and related regulatory filing and approval timelines), by performing a
quantitative test that compares the fair value of the IPR&D intangible asset
with its carrying value. For impairment testing purposes, the Company may
combine separately recorded IPR&D intangible assets into one unit of account
based on the relevant facts and circumstances. Generally, the Company will
combine IPR&D intangible assets for testing purposes if they operate as a single
asset and are essentially inseparable. If the fair value is less than the
carrying amount, an impairment loss is recognized in operating results.

The judgments made in evaluating impairment of long-lived intangibles can materially affect the Company's results of operations.

Taxes on Income



The Company's effective tax rate is based on pretax income, statutory tax rates
and tax planning opportunities available in the various jurisdictions in which
the Company operates. An estimated effective tax rate for a year is applied to
the Company's quarterly operating results. In the event that there is a
significant unusual or one-time item recognized, or expected to be recognized,
in the Company's quarterly operating results, the tax attributable to that item
would be separately calculated and recorded at the same time as the unusual or
one-time item. The Company considers the resolution of prior year tax matters to
be such items. Significant judgment is required in determining the Company's tax
provision and in evaluating its tax positions. The recognition and measurement
of a tax position is based on management's best judgment given the facts,
circumstances and information available at the reporting date. The Company
evaluates tax positions to determine whether the benefits of tax positions are
more
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likely than not of being sustained upon audit based on the technical merits of
the tax position. For tax positions that are more likely than not of being
sustained upon audit, the Company recognizes the amount of the benefit that is
greater than 50% likely of being realized upon ultimate settlement in the
financial statements. For tax positions that are not more likely than not of
being sustained upon audit, the Company does not recognize any portion of the
benefit in the financial statements. If the more likely than not threshold is
not met in the period for which a tax position is taken, the Company may
subsequently recognize the benefit of that tax position if the tax matter is
effectively settled, the statute of limitations expires, or if the more likely
than not threshold is met in a subsequent period (see Note 16 to the
consolidated financial statements).

Tax regulations require items to be included in the tax return at different
times than the items are reflected in the financial statements. Timing
differences create deferred tax assets and liabilities. Deferred tax assets
generally represent items that can be used as a tax deduction or credit in the
tax return in future years for which the Company has already recorded the tax
benefit in the financial statements. The Company establishes valuation
allowances for its deferred tax assets when the amount of expected future
taxable income is not likely to support the use of the deduction or credit.
Deferred tax liabilities generally represent tax expense recognized in the
financial statements for which payment has been deferred or expense for which
the Company has already taken a deduction on the tax return, but has not yet
recognized as expense in the financial statements.

Recently Issued Accounting Standards

For a discussion of recently issued accounting standards, see Note 2 to the consolidated financial statements.

Cautionary Factors That May Affect Future Results



This report and other written reports and oral statements made from time to time
by the Company may contain so-called "forward-looking statements," all of which
are based on management's current expectations and are subject to risks and
uncertainties which may cause results to differ materially from those set forth
in the statements. One can identify these forward-looking statements by their
use of words such as "anticipates," "expects," "plans," "will," "estimates,"
"forecasts," "projects" and other words of similar meaning, or negative
variations of any of the foregoing. One can also identify them by the fact that
they do not relate strictly to historical or current facts. These statements are
likely to address the Company's growth strategy, financial results, product
approvals, product potential, development programs, environmental or other
sustainability initiatives, and may include statements related to the expected
impact of the COVID-19 pandemic. One must carefully consider any such statement
and should understand that many factors could cause actual results to differ
materially from the Company's forward-looking statements. These factors include
inaccurate assumptions and a broad variety of other risks and uncertainties,
including some that are known and some that are not. No forward-looking
statement can be guaranteed and actual future results may vary materially.

The Company does not assume the obligation to update any forward-looking
statement. One should carefully evaluate such statements in light of factors,
including risk factors, described in the Company's filings with the Securities
and Exchange Commission, especially on this Form 10-K and Forms 10-Q and 8-K. In
Item 1A. "Risk Factors" of this annual report on Form 10-K the Company discusses
in more detail various important risk factors that could cause actual results to
differ from expected or historic results. The Company notes these factors for
investors as permitted by the Private Securities Litigation Reform Act of 1995.
One should understand that it is not possible to predict or identify all such
factors. Consequently, the reader should not consider any such list to be a
complete statement of all potential risks or uncertainties.

Item 7A.Quantitative and Qualitative Disclosures about Market Risk.

The information required by this Item is incorporated by reference to the discussion under "Financial Instruments Market Risk Disclosures" in Item 7. "Management's Discussion and Analysis of Financial Condition and Results of Operations."


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